1	"Leaves (mature plants) reduced to phyllodes or scales, or absent; bipinnate foliage found on 'reversion shoots' and seedlings, or rarely persisting with phyllodes on mature plants"	2
1	"Leaves all bipinnate"	1767
2	"Flowers arranged in cylindrical spikes (at least 1.5 times as long as wide); phyllodes absent or flat to terete or quadrangular and normally with many parallel, longitudinal nerves"	3
2	"Flowers arranged in globular or obloid heads (less than 1.5 times as long as wide)"	398
3	"Phyllodes absent"	"Acacia anomala"
3	"Phyllodes present"	4
4	"Phyllodes terete to subterete or quadrangular in section"	5
4	"Phyllodes flat (c. 1 mm wide or more)"	57
5	"Phyllodes not more than 3 cm long"	6
5	"Phyllodes some or all > 3 cm long"	12
6	"Phyllodes strongly 1-nerved, whorled, pungent; flowers (3 or) 4-merous (S.A., N.S.W., Vic., Tas.)"	"Acacia verticillata"
6	"Phyllodes nerveless or more than 4-nerved"	7
7	"Spikes sessile or peduncles very short, to 2 mm long; flowers 4-merous"	8
7	"Peduncles 5–30 mm long; flowers 5-merous"	9
8	"Phyllodes innocuous, pulvinate (SW W.A.)"	"Acacia multispicata"
8	"Phyllodes pungent, sessile (S.A., N.S.W.)"	"Acacia rhigiophylla"
9	"Peduncles sparsely or densely hairy"	10
9	"Peduncles glabrous"	11
10	"Phyllodes not crowded, 10–30 × 1–1.5 mm; spikes 7–9 mm long on sparsely puberulous peduncles (W.A.)"	"Acacia subsessilis"
10	"Phyllodes very crowded, 6–13 × 0.2–0.5 mm; spikes 8–22 mm long on densely hairy peduncles (northern W.A.)"	"Acacia dacrydioides"
11	"Phyllodes mostly 4.5–10 mm long; spikes 7–15 (–20) mm long (N.T.)"	"Acacia abbreviata"
11	"Phyllodes mostly 20–60 mm long; spikes (10–) 20–45 mm long (W.A., N.T.)"	"Acacia hilliana"
12	"Flowers 4-merous"	13
12	"Flowers 5-merous (rarely 6-merous)"	23
13	"Phyllodes 4- or 8-nerved"	14
13	"Phyllodes more than 8-nerved"	19
14	"Phyllodes sessile, quadrangular, 7–25 cm long, strongly incurved (southern W.A.)"	"Acacia merinthophora"
14	"Phyllodes terete to subterete, 8-nerved"	15
15	"Phyllodes sessile, decurrent, tortuous, often strongly curved, 8–16 cm long (W.A.)"	"Acacia kerryana"
15	"Phyllodes articulate (SW W.A.)"	16
16	"Phyllodes > 15 cm long; peduncles 6–11 mm long"	"Acacia jibberdingensis"
16	"Phyllodes < 15 cm long; spikes sessile or peduncles to 2 mm long"	17
17	"Phyllode nerves uniformly broad (c. 0.2 mm wide) and separated by very narrow, shallow furrows; branchlets appressed-hairy between ribs"	"Acacia isoneura"
17	"Phyllodes with nerves very narrow and/or separated by deep furrows; branchlets glabrous and/or ±ribless"	18
18	"Sepals free or almost free; phyllodes with 8 strongly raised nerves separated by deep furrows; spike buds tapered"	"Acacia sessilispica"
18	"Sepals united; phyllodes not deeply furrowed between nerves; spike buds not tapered"	"Acacia multispicata"
19	"Sepals free; peduncles 3–6 mm long; phyllodes strongly deflexed (W.A.)"	"Acacia palustris"
19	"Sepals united, at least at base; spikes sessile or peduncles to 2 mm long; phyllodes erect to spreading"	20
20	"Phyllodes normally ciliolate on upper half; pods 4–7 mm wide (W.A., S.A., N.S.W.)"	"Acacia acuminata"
20	"Phyllodes glabrous or minutely appressed-hairy between nerves; pods 2–4 mm wide (W.A.)"	21
21	"Branchlets glabrous and/or ribless; phyllodes 2–7 (–10) cm long, with more than 10, very narrow nerves"	"Acacia multispicata"
21	"Branchlets sericeous between the fine ribs; phyllodes 6–14 cm long, with ±broad nerves"	22
22	"Phyllodes 10-nerved, glabrous; spikes 10–25 mm long"	"Acacia isoneura"
22	"Phyllodes 16-nerved, minutely appressed-hairy between the nerves; spikes c. 10 mm long"	"Acacia cylindrica"
23	"Phyllodes 8-nerved (nerves not raised, often brown-resinous), 4–9.5 cm long, innocuous with acute to acuminate, recurved to subuncinate apices; spikes 6–8 mm long; peduncles 2 in each axil, 1.5–4 mm long, glabrous (SW W.A.)"	"Acacia gibbosa"
23	"Characters not combined as above"	24
24	"Sepals clearly united for 1/4 or more of their length"	25
24	"Sepals free or very shortly united at base"	48
25	"Phyllodes with obvious, circular stomata (observe at ×10 mag.), 3-nerved or nerves obscure, glabrous (northern W.A., N.T., Qld)"	"Acacia orthocarpa"
25	"Phyllodes without obvious, circular stomata (occasionally tuberculate), finely striate (nerves sometimes obscured by indumentum), sometimes glabrous"	26
26	"Spikes in short racemes; raceme axes 1–6 mm long"	27
26	"Spikes not in racemes or if so then axis rudimentary (< 1 mm long)"	28
27	"Peduncles 2–4 mm long, hairy (hairs often embedded in resin); spikes much longer than peduncles (W.A., N.T.)"	"Acacia macdonnellensis"
27	"Peduncles 5–15 mm long, glabrous; spikes about as long as peduncles (W.A., N.T., S.A., Qld)"	"Acacia tenuissima"
28	"Spikes pedunculate; peduncles 2–30 mm long, glabrous"	29
28	"Spikes sessile OR if pedunculate then peduncles hairy to some degree"	40
29	"Phyllode apices gradually narrowed to a brown, pungent, needle-like point that readily pierces the skin upon touch (W.A.)"	"Acacia intorta"
29	"Phyllodes innocuous (but commonly with a slender mucro or narrowed to hard, rigid points which do not readily pierce the skin upon touch)"	30
30	"Phyllodes not more than 10 cm long (very rarely to 12.5 cm in A. stowardii)"	31
30	"Phyllodes some or all > 10 cm long"	33
31	"Phyllodes usually tuberculate; sepals less than 1/2-united; pods woody; low, viscid shrubs (W.A., N.T.)"	"Acacia hilliana"
31	"Phyllodes not tuberculate; sepals more than 1/2-united; trees or tall shrubs, not viscid"	32
32	"Peduncles 15–20 mm long; bark 'Minni Ritchi'; pods subwoody (W.A., N.T.)"	"Acacia grasbyi"
32	"Peduncles 3–15 mm long; bark not 'Minni Ritchi'; pods papery (W.A., N.T., S.A., N.S.W., Qld)"	"Acacia sibirica"
33	"Branchlets pruinose; phyllodes continuous with branchlets, 15–45 cm long; spikes 3–4 cm long (SW W.A.)"	"Acacia longiphyllodinea"
33	"Branchlets not pruinose; phyllodes articulate on branchlets, often < 15 cm long; spikes not more than 3 cm long"	34
34	"Phyllodes rhombic in section, nerves on angles wider than those on intervening faces; pods chartaceous, 2 mm wide (SW W.A.)"	"Acacia resinimarginea"
34	"Phyllodes not as above (not SW W.A.)"	35
35	"Phyllodes finely longitudinally grooved, with nerves very indistinct; pods striate; calyx glabrous, c. 1/2 length of corolla (northern W.A.)"	"Acacia filamentosa"
35	"Phyllodes with nerves evident at ×10 mag.; pods not striate"	36
36	"Phyllodes angled by few, raised nerves (prominently grooved in between); calyx glabrous, less than 1/2 length of corolla (NE Qld)"	"Acacia jackesiana"
36	"Phyllodes ±terete, multistriate by numerous, fine nerves; calyx hairy or at least 1/2 length of corolla"	37
37	"Phyllodes glabrous; pods glabrous or scaly, ±constricted between seeds, 2–5 mm wide"	38
37	"Phyllodes appressed-pubescent between nerves; pods hairy between prominent resinous anastomosing longitudinal nerves, not constricted between seeds, 4–10 mm wide"	39
38	"Branchlet apices with yellow, crenulate resin-ribs; spikes 5–10 mm long, pale yellow to bright yellow; pods 2–3 mm wide (arid W.A., N.T., S.A., Qld)"	"Acacia tenuissima"
38	"Branchlets not resin-ribbed; spikes 10–20 mm long, light golden; pods 4–5 mm wide (NW W.A.)"	"Acacia exigua"
39	"Pods cylindrical, abruptly tapered at each end, to 13.5 cm long, 8–10 mm diam.; sepals 0.6–1.2 mm long"	"Acacia ramulosa"
39	"Pods narrowly oblong, oval in section, to 7.5 cm long, 4–6 mm wide; sepals 0.5–0.8 mm long"	"Acacia brachystachya"
40	"Phyllodes 8-nerved, with nerves separated by deep furrows (SW W.A.)"	"Acacia ephedroides"
40	"Phyllodes more than 8-nerved OR if 8-nerved then nerves not separated by deep furrows"	41
41	"Spikes < 1 cm long, ±sessile; branchlets and phyllodes with appressed, ±silky hairs, glabrescent; bark 'Minni Ritchi' (Qld, N.S.W.)"	"Acacia curranii"
41	"Characters not combined as above (spikes normally > 1 cm long)"	42
42	"Phyllodes densely hairy, with indumentum obscuring nervation, normally innocuous; receptacle densely white- or golden-hairy"	43
42	"Phyllodes glabrous or sometimes sparsely hairy (mainly between nerves), sharply to coarsely pungent; receptacle commonly glabrous to sparsely hairy"	45
43	"Receptacle hairs conspicuous and patent; pods 2.5–4 mm wide, thinly coriaceous; bark stringy and shaggy, red-brown (SW W.A.)"	"Acacia inophloia"
43	"Receptacle hairs minute and appressed; pods 6–22 mm wide, woody; bark not as above (arid zone: W.A.)"	44
44	"Pods 6–10 mm wide, moniliform (W.A.)"	"Acacia wanyu"
44	"Pods 11–22 mm wide, flat and not or very shallowly constricted between seeds (W.A.)"	"Acacia cuthbertsonii"
45	"Bark 'Minni Ritchi'; pods woody (W.A., N.T., S.A., Qld)"	"Acacia cyperophylla"
45	"Bark not 'Minni Ritchi'; pods chartaceous (W.A.)"	46
46	"Phyllodes innocuous"	"Acacia stereophylla"
46	"Phyllodes pungent"	47
47	"Peduncles 5–15 mm long; spikes interrupted; phyllodes 4–12.5 cm long"	"Acacia intorta"
47	"Peduncles 1.5–4 mm long; spikes ±densely flowered; phyllodes 6–22 cm long"	"Acacia sibina"
48	"Phyllodes with obvious, circular stomata, ±nerveless; pods woody and longitudinally nerved (northern W.A., N.T., Qld)"	"Acacia orthocarpa"
48	"Phyllodes without obvious, circular stomata, striate (nerves often obscure); pods not woody"	49
49	"Branchlets glabrous; phyllodes filiform, 8–16 cm long, c. 8-nerved; pods (where known) 2–3 mm wide (tropics)"	50
49	"Branchlets minutely appressed-hairy, at least towards extremities; phyllodes variable, more than 8-nerved"	51
50	"Peduncles 35–45 mm long (N.T.)"	"Acacia filipes"
50	"Peduncles 5–10 mm long (W.A.)"	"Acacia kimberleyensis"
51	"Spikes sessile (peduncles rarely to 2 mm long), < 15 mm long; pods terete, 1.5–2 mm diam. (SW W.A.)"	"Acacia coolgardiensis"
51	"Spikes pedunculate, > 15 mm long; pods 3–15 mm wide (arid zone)"	52
52	"Pods cylindrical or oval to square in cross-section; seeds longitudinal"	53
52	"Pods flattened; seeds oblique to transverse or longitudinal"	55
53	"Pods square in cross-section, to 3.5 cm long, 4 mm wide, narrowly winged on angles"	"Acacia atopa"
53	"Pods cylindrical to oval in cross-section, not winged"	54
54	"Pods cylindrical, abruptly tapered at each end, to 13.5 cm long, 8–10 mm diam.; sepals 0.6–1.2 mm long"	"Acacia ramulosa"
54	"Pods narrowly oblong, oval in section, to 7.5 cm long, 4–6 mm wide; sepals 0.5–0.8 mm long"	"Acacia brachystachya"
55	"Seeds longitudinal in valve"	"Acacia clelandii"
55	"Seeds oblique to transverse in valve"	56
56	"Pods with wings 2 mm wide; phyllodes 7–20 cm long or more"	"Acacia paraneura"
56	"Pods not winged; phyllodes 2.5–9 (–12.5) cm long"	"Acacia aneura"
57	"Phyllodes sharply pungent, with rigid, needle-like points that readily pierce the skin upon touch"	58
57	"Phyllodes innocuous (but commonly with a slender mucro or narrowed to hard, rigid points which do not readily pierce the skin upon touch)"	70
58	"Flowers 3- or 4-merous"	59
58	"Flowers 5-merous"	67
59	"Phyllodes broadly decurrent along branchlets (Qld, N.S.W., Vic.)"	"Acacia triptera"
59	"Phyllodes not decurrent along branchlets"	60
60	"Phyllodes 1-nerved on each face, 0.5–2.5 cm long"	61
60	"Phyllodes more than 1-nerved on each face, often > 2.5 cm long"	62
61	"Phyllodes inequilateral, ±crescent-shaped with a triangular, gland-bearing spur on adaxial margin, 3–10 mm wide (SW W.A.)"	"Acacia delphina"
61	"Phyllodes linear-lanceolate to ovate, to 7 mm wide, normally whorled (S.A., N.S.W., Vic., Tas.)"	"Acacia verticillata"
62	"Stipules spinescent, rigid, at least 1 mm long; phyllodes sessile"	63
62	"Stipules not spinescent; phyllodes pulvinate or ±sessile"	64
63	"Peduncles 3–12 mm long; spikes 15–50 mm long; phyllodes 1.5–4 mm wide (S.A., N.S.W., Vic.)"	"Acacia oxycedrus"
63	"Peduncles 1–2 mm long; spikes 5–10 mm long; phyllodes 1.2–2 mm wide (S.A., N.S.W.)"	"Acacia rhigiophylla"
64	"Spikes interrupted with flowers widely spaced along receptacle (Tas.)"	65
64	"Spikes densely or subdensely flowered; phyllodes 3–4.5 mm wide (SW W.A.)"	66
65	"Phyllodes 5–7-nerved on each face, 3–5 mm wide"	"Acacia mucronata"
65	"Phyllodes 3-nerved on each face, 1–3 mm wide"	"Acacia riceana"
66	"Phyllodes 5–7-nerved on each face; spikes golden, with dense flowers"	"Acacia neurophylla"
66	"Phyllodes 3-nerved on each face; spikes cream, with subdense flowers"	"Acacia incongesta"
67	"Phyllodes obliquely ovate-rhomboidal, 15–34 mm long, 9–25 mm wide; bark not 'Minni Ritchi' (N.T.)"	"Acacia arafurica"
67	"Phyllodes ±linear, narrower and/or longer than above"	68
68	"Bark not 'Minni Ritchi'; phyllodes 5–10 cm long, 3–4 mm wide (W.A., rare)"	"Acacia intorta"
68	"Bark 'Minni Ritchi'"	69
69	"Phyllodes < 7 cm long (N.T., Qld)"	"Acacia chisholmii"
69	"Phyllodes > 7 cm long (W.A., N.T., S.A., Qld)"	"Acacia cyperophylla"
70	"Phyllodes all or mostly in clusters of 2–6 at mature nodes (often 1 per node on young growth)"	71
70	"Phyllodes all or mostly borne singly at nodes"	75
71	"Branchlets with conspicuous thorns at many nodes; phyllodes 1-nerved on each face (SW W.A.)"	"Acacia kochii"
71	"Branchlets not thorny; phyllodes with or without visible nerves on each face (northern Aust.)"	72
72	"Phyllodes > 30 mm long, not commonly clustered; sepals free; peduncles 3–4 mm long (W.A., N.T.)"	"Acacia gonocarpa"
72	"Phyllodes < 30 mm long, all or mostly clustered (except on new shoots)"	73
73	"Peduncles 8–18 mm long; sepals 1/3–2/3-united; phyllodes 4–25 mm long (N.T.)"	"Acacia abbreviata"
73	"Peduncles 0–7 mm long; sepals free"	74
74	"Spikes pedunculate (peduncles 2–7 mm long); phyllodes 8–27 mm long, with 1 or more nerves on each face (N.T., Qld)"	"Acacia conjunctifolia"
74	"Spikes sessile; phyllodes 6–10 mm long, nerveless (but finely longitudinally wrinkled) (N.T., rare)"	"Acacia amentifera"
75	"Branchlets narrowly winged; basal peduncular bracts conspicuous; rush-like subshrub, commonly with a few, 1-nerved phyllodes (SW W.A., rare)"	"Acacia anomala"
75	"Characters not combined as above"	76
76	"Flowers 4-merous"	77
76	"Flowers 5- or 6-merous"	103
77	"Phyllodes without anastomosing minor nerves between the major longitudinal nerves"	78
77	"Phyllodes with few to numerous anastomosing minor nerves between the major longitudinal nerves (observe carefully at ×10 mag.)"	91
78	"Spikes interrupted, with receptacle clearly visible between widely spaced flowers (eastern Aust.)"	79
78	"Spikes ±dense (SW W.A.)"	81
79	"Phyllode gland present, 5–10 mm above phyllode axil (N.S.W., Vic., Tas.)"	"Acacia mucronata"
79	"Phyllode gland absent"	80
80	"Branchlets often hairy; peduncles 1–4 mm long (Qld, N.S.W., Vic.)"	"Acacia floribunda"
80	"Branchlets glabrous; peduncles 5–10 mm long (Qld, N.S.W.)"	"Acacia longissima"
81	"Phyllodes 1–3-nerved on each face"	82
81	"Phyllodes more than 3-nerved on each face; peduncles 0–4 mm long"	85
82	"Phyllodes 15–32 cm long; peduncles 6–11 mm long"	"Acacia jibberdingensis"
82	"Phyllodes 2–7 cm long; peduncles 0–3 mm long"	83
83	"Heads 15–25 mm long; phyllodes 40–70 × 3–4.5 mm"	"Acacia incongesta"
83	"Heads 6–15 mm long; phyllodes narrower or shorter than above"	84
84	"Phyllodes > 5 cm long, not more than 1.5 mm wide"	"Acacia multispicata"
84	"Phyllodes to 4.5 cm long, 1.5–4 mm wide"	"Acacia singula"
85	"Phyllodes 1–2 mm wide"	86
85	"Phyllodes > 2 mm wide"	87
86	"Phyllodes ciliolate towards apices; pods 4–7 mm wide"	"Acacia acuminata"
86	"Phyllodes glabrous; pods 3–4 mm wide"	"Acacia multispicata"
87	"Phyllodes with prominent, raised, widely spaced nerves 0.3–1 mm apart"	88
87	"Phyllodes with fine, scarcely raised, close nerves (3–10 per mm)"	89
88	"Phyllodes prominently incurved; spikes 5–10 mm long; pods coiled"	"Acacia cochlocarpa"
88	"Phyllodes straight to shallowly incurved; spikes 10–50 mm long; pods not coiled"	"Acacia neurophylla"
89	"Phyllodes obviously recurved, glabrous; spikes pale yellow"	"Acacia drepanophylla"
89	"Phyllodes straight or shallowly incurved, if recurved (sometimes in A. acuminata) then fimbriolate towards apices; spikes golden"	90
90	"Mature phyllodes normally fimbriolate towards apices; peduncles 0–2 mm long; receptacle often golden-puberulous"	"Acacia acuminata"
90	"Mature phyllodes glabrous; peduncles 1.5–4 mm long; receptacle glabrous or sparsely white-hairy"	"Acacia oldfieldii"
91	"Minor nerves of phyllodes diverging transversely or obliquely from the major nerves and forming an obvious net-like reticulum"	92
91	"Minor nerves of phyllodes clearly parallel to major nerves, normally with relatively few anastomoses between them and not forming a conspicuous net-like reticulum"	96
92	"Phyllodes 5–9 × 3.5–7.5 cm, undulate, margins irregularly denticulate, nerves verrucose-scabrous; spikes dense, golden, 6–8 mm diam; sepals free (SW W.A.)"	"Acacia denticulosa"
92	"Characters not as above"	93
93	"Phyllode obovate, oblanceolate or suborbicular, with apex obtuse"	94
93	"Phyllode linear to narrow-elliptic, with apex tapering, acute"	95
94	"Phyllodes 1.5–3.5 cm long (N.S.W., A.C.T., Vic.)"	"Acacia alpina"
94	"Phyllodes 4–14 cm long (Vic.)"	"Acacia phlebophylla"
95	"Phyllodes 10–35 mm wide; branchlets not brittle; spikes ±sessile; pods moniliform, papery (N.S.W., Vic.)"	"Acacia dallachiana"
95	"Phyllodes 5–12 mm wide; branchlets brittle; peduncles 3–5 mm long; pods linear, woody (N.S.W.)"	"Acacia courtii"
96	"Phyllodes coarsely pungent, 4–7 cm long, 3–4.5 mm wide (W.A.)"	"Acacia incongesta"
96	"Phyllodes innocuous, commonly longer and/or wider than above (eastern Aust.)"	97
97	"Margins of most phyllodes irregular and with microscopically granular, resinous margins (Qld, N.S.W.,Vic.)"	"Acacia obtusifolia"
97	"Margins of phyllodes smooth and even, never resinous"	98
98	"Phyllodes mostly not more than 10 mm wide"	99
98	"Phyllodes some or all > 10 mm wide"	102
99	"Phyllode gland present"	100
99	"Phyllode gland absent"	101
100	"Peduncles appressed-hairy; branchlets ±pubescent (N.S.W., Vic., Tas.)"	"Acacia mucronata"
100	"Peduncles glabrous; branchlets glabrous or subglabrous (Qld, N.S.W.)"	"Acacia orites"
101	"Branchlets hairy; peduncles 1–4 mm long (Qld, N.S.W., Vic.)"	"Acacia floribunda"
101	"Branchlets glabrous; peduncles 5–10 mm long (Qld, N.S.W.)"	"Acacia longissima"
102	"Receptacle glabrous; flowers mid- to bright yellow (S.A., Qld, N.S.W., Vic., Tas.)"	"Acacia longifolia"
102	"Receptacle densely golden-pubescent; flowers pale yellow (Qld, N.S.W., Vic.)"	"Acacia maidenii"
103	"Phyllodes reticulate between major longitudinal nerves, with anastomoses sometimes infrequent (but present on all or most phyllodes)"	104
103	"Phyllodes not reticulate, normally with many parallel, close or distant, longitudinal nerves on each face, often 1–5 more evident than the rest (occasionally 1-nerved on each face or nerveless)"	177
104	"Bark 'Minni Ritchi'"	105
104	"Bark not 'Minni Ritchi'"	110
105	"Phyllodes spirally twisted or undulate, 3.5–12.5 cm long, 4–30 mm wide; peduncles 10–15 mm long; plants very viscid (N.T.)"	"Acacia helicophylla"
105	"Phyllodes not spirally twisted or undulate, 1.5–8 mm wide"	106
106	"Phyllodes linear-oblanceolate, 4–9 cm long, 3–6 mm wide, prominently 3–7-nerved on each face; peduncles 4–8 mm long; pods linear, 5–6 mm wide, velvety (SW W.A.)"	"Acacia oncinophylla"
106	"Phyllodes not as above; pods > 6 mm wide and/or glabrous (not SW W.A.)"	107
107	"Phyllodes 6–14.5 cm long; spikes interrupted, pale yellow or cream; peduncles 3–5 mm long; pods subtetragonous by wide margins (northern W.A.)"	"Acacia delibrata"
107	"Phyllodes 0.9–5 cm long; spikes dense, golden; peduncles 5–35 mm long; pods with thick marginal ribs"	108
108	"Phyllodes linear-oblanceolate, 12–50 mm long; peduncles 10–35 mm long; tall shrubs to c. 6 m high (northern W.A., N.T., Qld)"	"Acacia lysiphloia"
108	"Phyllodes obliquely oblong, oblong-elliptic to broadly obovate"	109
109	"Phyllodes 0.9–1.5 cm long, 3–7 mm wide; peduncles 5–10 mm long; pods 7–8 mm wide; low shrubs to c. 1 m high (NW W.A.)"	"Acacia effusa"
109	"Phyllodes 1–3.2 cm long, 5–15 mm wide; peduncles 10–20 mm long; pods 10–15 mm wide; tall shrub or tree (W.A., N.T., Qld)"	"Acacia monticola"
110	"Sepals free to base or almost so"	111
110	"Sepals at least 1/4-united"	121
111	"Phyllodes and branchlets with conspicuous glandular hairs (each hair bearing a globular, golden droplet of resin) (northern W.A.)"	"Acacia gloeotricha"
111	"Phyllodes and branchlets without glandular hairs"	112
112	"Phyllodes 3.5–10.5 cm long, 6.5–23 mm wide, ±straight, with lowermost major nerve shortly confluent with margin near pulvinus; pods woody, flat, ±straight, opening elastically from apex (N.T.)"	"Acacia cataractae"
112	"Phyllode characters not combined as above; pods not as above"	113
113	"Phyllodes large (7–22.5 cm long, 1–7 cm wide) and falcate or markedly inequilateral (with lower margin ±straight and upper margin convex); pulvinus 4–10 mm long"	114
113	"Phyllode characters not combined as above; pulvinus < 4 mm long"	116
114	"Pods 5–10 mm wide; peduncles glabrous; inflorescences mostly elongated racemes; branchlets and phyllodes commonly pruinose (W.A., N.T.)"	"Acacia tumida"
114	"Pods 2.5–4 mm wide; peduncles hairy or glabrous; inflorescences simple (spikes often crowded in phyllode axils) or short (rarely elongated) racemes; branchlets and phyllodes hairy or glabrous, not pruinose"	115
115	"Pods 2.5–3 mm wide; seeds 2.8–3.7 mm long; phyllodes with minor nerves normally forming a ±obscure, close, longitudinal reticulum (northern Qld)"	"Acacia brassii"
115	"Pods 4 mm wide; seeds 5.5–7 mm long; phyllodes with few anastomosing nerves (nerves normally all parallel) (northern W.A., N.T., Qld)"	"Acacia difficilis"
116	"Minor nerves of phyllodes forming a fine, close, net-like reticulum; phyllodes 2–5.5 cm long, l:w commonly 2–3"	117
116	"Minor nerves of phyllodes ±parallel to major nerves and with few anastomoses between them, or (A. richardsii) with an open reticulum; phyllodes often > 5 cm long or with l:w > 3"	118
117	"Phyllodes semilunate, 10–22 mm wide; pods 6–7 mm wide; pruinose shrubs or trees (northern N.T.)"	"Acacia mountfordiae"
117	"Phyllodes ±symmetrical, 6–10 (–14) mm wide; pods 8–40 mm wide; shrubs, not pruinose (SW W.A.)"	"Acacia craspedocarpa"
118	"Branchlets without raised ribs; peduncles 13–26 mm long; pods submoniliform, thinly coriaceous (northern N.T.)"	"Acacia gracilenta"
118	"Branchlets with fine, crenulate resin-ribs and/or peduncles < 5 mm long; pods (where known) not constricted between seeds, woody, ±quadrangular by marginal wings"	119
119	"Peduncles 5–15 mm long; phyllodes openly reticulate, 20–40 mm long (W.A., N.T.)"	"Acacia richardsii"
119	"Peduncles 2–4 mm long; phyllodes with few anastomoses, often > 40 mm long"	120
120	"Phyllodes 6–16 mm wide, sparsely tuberculate; branchlets not crenulate resin-ribbed (W.A.)"	"Acacia lentiginea"
120	"Phyllodes to 6 mm wide, normally not tuberculate; branchlets crenulate resin-ribbed (W.A., N.T.)"	"Acacia gonocarpa"
121	"Phyllodes linear, 13–34 cm long, 6–20 mm wide; spikes clearly interrupted; flowers large (c. 3 mm long); pods woody, to 15 × 2 cm (W.A., N.T.)"	"Acacia pachycarpa"
121	"Characters not combined as above"	122
122	"Branchlets pruinose, glabrous, stout, flattened or acutely angled; phyllodes glabrous, openly and obviously reticulate; pulvinus 1–3 mm long"	123
122	"Branchlets not as above OR if so then phyllode or pulvinus characters not combined as above"	124
123	"Phyllodes distinctly pulvinate, with lower edge of pulvinus continuous with branchlet rib (Qld)"	"Acacia cretata"
123	"Phyllodes ±sessile, continuous with branchlets by a broad band of tissue (northern W.A., N.T., Qld)"	"Acacia latifolia"
124	"Pods ±woody, opening elastically from the apex, linear-oblanceolate (narrowed towards base), obliquely nerved"	125
124	"Pods chartaceous to coriaceous or crustaceous OR if woody then other characters not combined as above"	131
125	"Phyllodes, branchlets and pods densely clothed with silky, appressed, silvery hairs (northern W.A., N.T. & Qld)"	"Acacia argyraea"
125	"Phyllodes, branchlets and pods glabrous or insignificantly hairy"	126
126	"Branchlets yellowish, prominently crenulate, resin-ribbed at apices; phyllode nerves prominent and raised (northern W.A., N.T., Qld)"	"Acacia drepanocarpa"
126	"Branchlets dark coloured and/or not crenulate resin-ribbed"	127
127	"Phyllodes spreading and falcately recurved, 7.5–17 cm long, 3–16 mm wide (N.T.)"	"Acacia praetermissa"
127	"Phyllodes not as above"	128
128	"Phyllodes (6–)10–16 (–19) cm long; branchlets yellow to light brown; peduncles 2.5–8 mm long (W.A., N.T.)"	"Acacia oligoneura"
128	"Phyllodes < 10 cm long OR if more then branchlets dark coloured and/or peduncles > 7 mm long"	129
129	"Calyx deeply dissected (for 2/3–3/4 its length); pods 4–9.5 mm wide; peduncles 4–12 mm long (N.T.)"	"Acacia cataractae"
129	"Calyx shallowly dissected (for 1/4–1/3 its length)"	130
130	"Phyllodes 2.5–8 cm long; pods 40–58 mm long; shrubs not resinous (Qld)"	"Acacia lazaridis"
130	"Phyllodes (5–) 6–10 (–12) cm long; pods 40–100 mm long; shrubs resinous (northern W.A., N.T., Qld)"	"Acacia limbata"
131	"Phyllodes not prominently reticulate; minor nerves clearly parallel to major nerves and sparsely anastomosing"	132
131	"Phyllodes prominently reticulate; minor nerves with numerous anastomoses and normally not parallel to major nerves"	161
132	"Branchlets glabrous"	133
132	"Branchlets hairy (indumentum often minute and sometimes confined to extremities, observe at ×10 mag.)"	151
133	"Phyllodes 4–8 mm wide AND peduncles 1.5–2 mm long (N.T.)"	"Acacia scopulorum"
133	"Phyllodes > 8 mm wide OR peduncles > 2 mm long"	134
134	"Phyllodes with the major nerves neither running together nor confluent with one another at base AND not confluent with lower margin"	135
134	"Phyllodes with some or all of the major nerves running together or confluent with one another at base AND/OR confluent with lower margin"	141
135	"Spikes dense"	136
135	"Spikes normally interrupted; calyx ±glabrous, shallowly dissected (to 1/3 its length) into triangular lobes"	138
136	"Phyllodes ±straight, with nerves widely spaced; calyx ±glabrous, 1/4–1/2-dissected into triangular lobes (W.A.)"	"Acacia levata"
136	"Phyllodes ±falcate, with minor nerves very close together; calyx hairy, dissected for 1/3–1/2 or more into oblong to linear lobes"	137
137	"Spikes in distinct racemes 0.5–10 cm long; branchlets and phyllodes normally glabrous and often pruinose (W.A., N.T.)"	"Acacia tumida"
137	"Spikes 2–4 within axils of phyllodes (rarely a few in short racemes); branchlets and phyllodes hairy or glabrous, rarely pruinose (W.A.)"	"Acacia retinervis"
138	"Phyllodes straight, obtuse to subacute, 5–11 cm long; pods woody, curved (N.T., Qld)"	"Acacia megalantha"
138	"Phyllodes falcate, gradually narrowed to acute or acuminate apices, often > 11 cm long"	139
139	"Pods woody, 8–15 mm wide; funicle encircling seed (N.T., Qld)"	"Acacia auriculiformis"
139	"Pods thinly coriaceous, 3–5 mm wide; funicle not encircling seed"	140
140	"Spikes yellow to golden; phyllodes with 3 nerves more prominent than the rest; pods openly curved (sometimes into a circle) or twisted (northern W.A., N.T., Qld)"	"Acacia leptocarpa"
140	"Spikes cream; phyllodes with 2 nerves more prominent than the rest; pods spirally coiled (Qld)"	"Acacia spirorbis"
141	"Pods 6–8 mm wide; funicle bright yellow and encircling seed; spikes interrupted, cream to very pale yellow; minor nerves of phyllode numerous (5–9 per mm) (Qld)"	"Acacia polystachya"
141	"Pods 2–5 mm wide; funicle not encircling seed; minor nerves of phyllodes often less numerous (1–5 per mm)"	142
142	"Ovary glabrous or hairy; spikes 15–30 mm long; aril bright yellow (W.A., N.T., S.A., Qld)"	"Acacia elachantha"
142	"Ovary hairy; spikes some or all > 30 mm long"	143
143	"Phyllodes ±straight (sometimes shallowly recurved at apices)"	144
143	"Phyllodes falcate (uniformly recurved over entire phyllode length)"	147
144	"Calyx tube sparsely puberulous (Qld, N.S.W.)"	"Acacia concurrens"
144	"Calyx tube glabrous (lobes sometimes sparsely ciliolate)"	145
145	"Aril bright yellow; phyllodes inequilateral (lower margin ±straight, upper margin convex) and commonly spreading rather widely (Qld, N.S.W.)"	"Acacia leiocalyx"
145	"Aril cream to white; phyllodes normally erect and ±symmetrical"	146
146	"Phyllodes coriaceous, with 2–4 prominent nerves (the lower 2 joined 4–20 mm above phyllode base), the minor nerves 2 or 3 per mm, some anastomosing (N.T., Qld)"	"Acacia tropica"
146	"Phyllodes rather thin, not coriaceous, with longitudinal nerves fine, widely spaced, 2 (or 3) more prominent, running together in middle of phyllode at base (N.T.)"	"Acacia lacertensis"
147	"Spikes cream; phyllodes with 2 nerves more prominent than rest; pods spirally coiled (Qld)"	"Acacia spirorbis"
147	"Spikes lemon yellow to golden; phyllodes with 3 nerves more prominent than rest"	148
148	"Minor nerves of phyllodes widely spaced (1–3 per mm); spikes 2–5 in each axil; calyx ±glabrous; aril bright orange (northern W.A., N.T. & Qld)"	"Acacia leptocarpa"
148	"Minor nerves of phyllodes commonly closer together; spikes 2 in each axil; calyx sparsely hairy or glabrous; aril white or yellow (Qld, N.S.W.)"	149
149	"Pulvinus < 5 mm long; calyx tube glabrous or rarely with a few short hairs at base"	"Acacia leiocalyx"
149	"Pulvinus > 5 mm long"	150
150	"Phyllodes 12–24 cm long, l:w = 9–20; calyx tube glabrous or with a few apical and basal hairs"	"Acacia crassa"
150	"Phyllodes 10–16 cm long, l:w = 3.5–9; calyx tube sparsely puberulous near base"	"Acacia concurrens"
151	"Branchlet hairs patent (Qld)"	152
151	"Branchlet hairs appressed"	153
152	"Phyllodes straight, pubescent at least at base; calyx tube glabrous or sparsely hairy at base and apex"	"Acacia crassa"
152	"Phyllodes falcate, usually glabrous; calyx tube pubescent"	"Acacia longispicata"
153	"Phyllodes ±straight, symmetrical to slightly inequilateral"	154
153	"Phyllodes falcate OR if straight then markedly inequilateral (with lower margin ±straight and upper margin prominently convex)"	157
154	"Calyx tube densely and conspicuously hairy; pods coiled; phyllodes 12–19 cm long (N.T.)"	"Acacia sericoflora"
154	"Calyx tube ±glabrous; pods straight to curved"	155
155	"Phyllodes with 2 main nerves running together at base, c. 8–17 cm long; pods 3–4.5 mm wide, not woody (W.A., N.T., Qld)"	"Acacia thomsonii"
155	"Phyllodes without main nerves remaining together; pods 11–22 mm wide, woody"	156
156	"Phyllodes 3–8.5 cm long, densely sericeous, nervation obscure; spikes interrupted; pods 11–22 mm wide (W.A., N.T.)"	"Acacia cuthbertsonii"
156	"Phyllodes 8–13.5 cm long, obscurely sericeous, nervation pronounced; spikes dense; pods 8–12 mm wide (W.A.)"	"Acacia levata"
157	"Phyllodes with main nerves remaining separate from one another at base; new shoots with conspicuous reddish resin-hairs; pods woody, 5–11 mm wide (W.A.)"	"Acacia retinervis"
157	"Phyllodes with 2 or 3 main nerves confluent or contiguous with one another at base; pods not woody, 2.5–5 mm wide; new shoots often golden-hairy"	158
158	"Spikes cream to pale yellow; pods tightly spirally coiled; funicle encircling seed; young tips golden-hairy (Qld)"	"Acacia cincinnata"
158	"Spikes golden; pods straight to curved; funicle not encircling seed"	159
159	"Spikes all or mostly 6–12 cm long; pods submoniliform (clearly constricted between seeds) (Qld)"	"Acacia longispicata"
159	"Spikes 1.5–5 cm long; pods not or scarcely constricted between seed (W.A., N.T., S.A., Qld)"	160
160	"Spikes 1.5–3.3 cm long; new shoots at initiation not encrusted with resin (sometimes with a few, scattered tiny resin-hairs) (W.A., N.T., S.A., Qld)"	"Acacia elachantha"
160	"Spikes 3–5 cm long; new shoots at initiation encrusted with a layer of brown resin (W.A., N.T., Qld)"	"Acacia cowleana"
161	"Branchlets glabrous"	162
161	"Branchlets hairy (hairs patent to closely appressed)"	165
162	"Phyllodes with major nerves neither running together nor confluent with lower margin at base, and minor nerves closely anastomosing; pods woody, 5–11 mm wide (W.A.)"	"Acacia retinervis"
162	"Phyllodes with some or all of the major nerves running together or confluent with lower margin at base, and minor nerves openly anastomosing with clearly elongated nerve islands; pods 2.5–5 mm wide, not woody"	163
163	"Phyllodes falcate; branchlets compressed-terete, slender, ±pruinose; pods linear, openly curved or ±twisted (W.A.)"	"Acacia gardneri"
163	"Phyllodes ±straight; branchlets infrequently pruinose; pods tightly and irregularly coiled"	164
164	"Spikes white to cream; phyllodes 3 or 4 (–5)-nerved on each face, 3–9.5 cm wide; penultimate branchlets acutely angled and stout; tree to 30 m high (Qld)"	"Acacia mangium"
164	"Spikes golden; phyllodes 3-nerved on each face, 2–5 cm wide; penultimate branchlets terete or slightly angled (acutely angled at apices); shrub or tree to 8 m high (W.A., N.T., Qld)"	"Acacia holosericea"
165	"Phyllodes with major nerves all free from one another and from lower margin (occasionally very shortly confluent in A. arafurica); branchlets terete; pods not tightly coiled (except sometimes following dehiscence)"	166
165	"Phyllodes with some or all of the major nerves running together with one another and/or confluent with lower margin for a considerable distance above the pulvinus; branchlets acutely angled or terete; pods often tightly coiled"	170
166	"Branchlet hairs closely appressed; phyllodes falcate; pods 5–11 mm wide, scurfy becoming glabrous (northern W.A.)"	"Acacia retinervis"
166	"Branchlet hairs patent; phyllodes not falcate; pods 3–4.5 mm wide, normally hairy"	167
167	"Phyllodes with l:w = 1–2, markedly inequilateral (upper margin much more convex than lower)"	168
167	"Phyllodes with l:w > 2, ±symmetrical"	169
168	"Phyllodes 1.5–3.4 cm long, 9–25 mm wide; flowers ±glabrous (N.T.)"	"Acacia arafurica"
168	"Phyllodes (3–) 4–8 cm long, 20–60 mm wide; flowers densely hairy (northern W.A., N.T. & Qld)"	"Acacia humifusa"
169	"Phyllodes 3–5-nerved on each face, 20–55 mm wide; flowers ±glabrous (Qld)"	"Acacia nesophila"
169	"Phyllodes 2- or 3-nerved on each face, 4–20 mm wide; flowers densely hairy (W.A., N.T., Qld)"	"Acacia stipuligera"
170	"Peduncle hairs closely appressed; pods openly curved (rarely tightly coiled); new shoots pale yellow-sericeous (often tinged brown) but soon aging silvery; phyllode apices without glands (W.A., N.T., Qld)"	"Acacia colei"
170	"Peduncle hairs patent OR if appressed (A. holosericea) then pods tightly coiled and phyllode apices often gland-bearing; new shoots not yellow-sericeous"	171
171	"Pods tightly and somewhat irregularly coiled; phyllodes often with a small gland at base of apical mucro"	172
171	"Pods straight to curved; phyllode apices without glands"	174
172	"Pods densely hairy; branchlets terete, hairs of indumentum patent; phyllodes mostly 3–6 cm wide, l:w = 2–3 (W.A., N.T.)"	"Acacia pellita"
172	"Pods ±glabrous; branchlets angled or terete, hairs of indumentum appressed or patent"	173
173	"Penultimate branchlets terete to slightly angled; bracteoles 1–1.5 mm long, spathulate; phyllodes mostly 2–5 cm wide with l:w = 3.5–6 (W.A., N.T., Qld)"	"Acacia holosericea"
173	"Penultimate branchlets acutely angled and stout; bracteoles 2–4 mm long, linear (evident in buds); phyllodes mostly 3–5.5 cm wide with l:w = 2.5–4 (W.A., N.T.)"	"Acacia neurocarpa"
174	"Receptacle sparsely hairy; phyllodes symmetrical to slightly inequilateral; petals glabrous (Qld)"	"Acacia nesophila"
174	"Receptacle densely hairy; phyllodes strongly inequilateral (upper margin much more convex than lower)"	175
175	"Branchlets acutely angled and stout; phyllode l:w = 3–5 (Qld)"	"Acacia grandifolia"
175	"Branchlets terete; phyllode l:w = 1–2"	176
176	"Petals glabrous; phyllodes mostly 4- or 5-nerved on each face (N.T., Qld)"	"Acacia dimidiata"
176	"Petals hairy; phyllodes mostly 3-nerved on each face (W.A., N.T., Qld)"	"Acacia humifusa"
177	"Phyllodes 0–4-nerved on each face"	178
177	"Phyllodes more than 4-nerved on each face (sometimes 1–3 nerves more prominent but always with accompanying parallel minor nerves)"	203
178	"Phyllodes not more than 5 cm long"	179
178	"Phyllodes some or all > 5 cm long"	190
179	"Branchlets spinose; phyllodes 1-nerved on each face, 3.5–7 mm long (SW W.A.)"	"Acacia imitans"
179	"Branchlets not spinose"	180
180	"Phyllodes with obvious, circular stomata (at ×10 mag.), glabrous, often ±nerveless; pods woody, narrowed towards base (northern W.A.)"	"Acacia arida"
180	"Phyllode characters not combined as above (usually without obvious, circular stomata, often appressed-hairy, with 1 or more nerves ±evident on each face)"	181
181	"Phyllodes 1-nerved on each face"	182
181	"Phyllodes not as above (not combining characters of leads 4 and 5/5:)"	183
182	"Phyllodes dimidiate with upper margin angled or rounded, l:w = 2 (Qld, N.S.W.)"	"Acacia cultriformis"
182	"Phyllodes narrowly linear to narrowly oblong-oblanceolate, symmetrical, l:w = at least 20 (W.A.)"	"Acacia ashbyae"
183	"Phyllodes < 2.5 (–3) cm long, with thickened mucro; glabrous resinous shrubs without 'Minni Ritchi' bark (northern W.A., N.T., Qld)"	"Acacia wickhamii"
183	"Phyllodes some or all > 2.5 cm long OR if not then with delicate, acute to short-acuminate tips; branchlets, phyllodes or peduncles normally hairy"	184
184	"Receptacle densely hairy; phyllodes 3–6 mm wide, strongly 3–7-nerved on each face; bark 'Minni Ritchi' (SW W.A.)"	"Acacia oncinophylla"
184	"Receptacle glabrous or sparsely appressed-hairy; phyllodes commonly < 3 mm wide (northern & NW Aust.)"	185
185	"Branchlets glabrous and crenulate resin-ribbed; pods ±woody, with discrete marginal wings 2–3.5 mm wide (W.A., N.T.)"	"Acacia gonocarpa"
185	"Branchlets and pods not as above"	186
186	"Bark not 'Minni Ritchi'; petals swollen abaxially at apex (best observed in buds), ±nerveless; pods < 5 mm wide, glabrous (N.T.)"	"Acacia linarioides"
186	"Bark 'Minni Ritchi'; petals not swollen abaxially, often prominently 1-nerved; pods > 5 mm wide and/or hairy"	187
187	"Phyllodes linear-obovate (normally broadest above middle), 1–5 cm long, 1.2–5 (–7) mm; pods glabrous (northern W.A., N.T., Qld)"	"Acacia lysiphloia"
187	"Phyllodes narrowly linear, normally not more than 2 mm wide"	188
188	"Phyllodes with 2, prominent, raised, acentral nerves on each face; pods glabrous (Qld)"	"Acacia chisholmii"
188	"Phyllodes with a central nerve on each face (sometimes obscure nerves either side of it); pods hairy (at least when young) (W.A.)"	189
189	"Phyllodes without a thickened upper margin; pods 4–5 mm wide, submoniliform, ±straight (northern W.A.)"	"Acacia minniritchi"
189	"Phyllodes with upper margin thickened; pods 7–12 mm wide, mostly straight-sided, curved to circinnate (NW W.A.)"	"Acacia trachycarpa"
190	"Phyllodes 1-nerved on each face"	191
190	"Phyllodes not as above (not combining characters of leads 13 and 14/14:)"	192
191	"Phyllodes 8–16 mm wide; raceme axis 20–35 mm long; pods 7 mm wide (N.S.W.)"	"Acacia dorothea"
191	"Phyllodes 1–4 mm wide; raceme axis 1–2 mm long; pods 3 mm wide (W.A.)"	"Acacia ashbyae"
192	"Bark 'Minni Ritchi'; branchlets, phyllodes or peduncles normally hairy (hairs often sparse and appressed, rarely absent in A. trachycarpa)"	193
192	"Bark not 'Minni Ritchi'; branchlets, phyllodes and peduncles glabrous"	197
193	"Receptacle with dense, spreading hairs; phyllodes strongly 3- or more-nerved on each face; pods linear, 5–6 mm wide, velvety (SW W.A.)"	194
193	"Receptacle glabrous or sparsely appressed-hairy (NW and N Aust.)"	195
194	"Phyllodes and branchlets ±glabrous"	"Acacia oncinophylla"
194	"Phyllodes and branchlets obviously appressed-hairy"	"Acacia fauntleroyi"
195	"Phyllodes with 2, prominent, raised, acentral nerves on each face; pods glabrous (Qld)"	"Acacia chisholmii"
195	"Phyllodes with a central nerve on each face (sometimes obscure nerves either side of it); pods hairy (at least when young) (W.A.)"	196
196	"Phyllodes without a thickened upper margin; pods 4–5 mm wide, submoniliform, ±straight (northern W.A.)"	"Acacia minniritchi"
196	"Phyllodes with upper margin thickened; pods 7–12 mm wide, mostly straight-sided, curved to circinnate (NW W.A.)"	"Acacia trachycarpa"
197	"Phyllodes with obvious, circular stomata (at ×10 mag.), often ±nerveless; calyx 1/4–5/6-dissected; pods woody, narrowed towards base (northern W.A.)"	"Acacia arida"
197	"Phyllode characters not combined as above (usually without obvious, circular stomata and with 1 or more nerves ±evident on each face)"	198
198	"Spikes 6–8 mm long on peduncles 1.5–4 mm long; phyllodes with 3 plane (not raised) often brown resinous nerves per face (SW W.A.)"	"Acacia gibbosa"
198	"Characters not combined as above (not SW W.A.)"	199
199	"Sepals free to base; pods with narrow marginal wings; spikes 20–30 mm long"	200
199	"Sepals united for c. 1/2 or more of their length; pods not winged"	201
200	"Phyllodes 8–16 cm long; peduncles 5–10 mm long; pods c. 2 mm wide (W.A.)"	"Acacia kimberleyensis"
200	"Phyllodes 3–8 cm long; peduncles normally 3–4 mm long (sometimes to 8 mm in W.A.); pods 3–6 mm wide (W.A., N.T.)"	"Acacia gonocarpa"
201	"Pods 2–3 mm wide, papery; spikes 11–15 mm long; peduncles 3–5 mm long (southern arid zone: W.A., S.A.)"	"Acacia symonii"
201	"Pods 5–6 mm wide, woody or subwoody; peduncles commonly > 5 mm long (northern Aust.)"	202
202	"Branchlets red-brown or yellowish red; spikes < 15 mm long, interrupted; pods abruptly contracted at base (Qld)"	"Acacia guymeri"
202	"Branchlets yellow; spikes 15–40 mm long, dense; pods gradually tapered towards base (W.A., N.T.)"	"Acacia drepanocarpa"
203	"Inflorescences all or mostly racemose; raceme axes 2–20 mm long (rarely longer) and sometimes growing out at or before anthesis"	204
203	"Inflorescences all or mostly simple OR if racemose the raceme axes very rudimentary (not more than c. 1 mm long)"	245
204	"Phyllodes linear, l:w mostly > 15"	205
204	"Phyllodes not as above (normally narrowly elliptic and/or l:w less than 15, often falcate)"	215
205	"Phyllodes strongly falcate; peduncles densely hairy, 4–6 mm long (N.T.)"	"Acacia undoolyana"
205	"Phyllodes straight OR if falcate then peduncles not as above"	206
206	"Peduncles 5–20 mm long, glabrous; branchlets often pruinose"	207
206	"Peduncles 0.5–5 mm long, glabrous or hairy (hairs sometimes embedded in resin); branchlets normally not pruinose"	210
207	"Phyllode margins red or brown (SW W.A.)"	"Acacia yorkrakinensis"
207	"Phyllode margins yellow"	208
208	"Pods 5–6 mm wide; peduncles 6–20 mm long; phyllodes 4–10 mm wide (SW W.A.)"	"Acacia signata"
208	"Pods 2–4 mm wide (not W.A.)"	209
209	"Peduncles 10–15 mm long; phyllodes mostly shallowly to obviously falcate, 2.5–6 mm wide (Qld, N.S.W.)"	"Acacia petraea"
209	"Peduncles 5–8 mm long; phyllodes ±straight except apices often curved, 4–9 mm wide (N.T.)"	"Acacia ammobia"
210	"Branchlets hairy between the obvious ribs; spikes subdense to clearly interrupted; calyx golden-hairy to ±glabrous (Qld)"	"Acacia leptostachya"
210	"Characters not combined as above (calyx hairs never golden)"	211
211	"Spikes 3–10 mm long (N.S.W., Qld)"	"Acacia granitica"
211	"Spikes > 10 mm long"	212
212	"Bark (upper branches) 'Minni Ritchi'; phyllodes 1–2.3 mm wide (N.T.)"	"Acacia desmondii"
212	"Bark not 'Minni Ritchi'; phyllodes some or all 2–8 mm wide"	213
213	"Calyx villous at base; phyllodes normally 1.5–5 mm wide, apices straight or abruptly subuncinate (arid zone: W.A., N.T.)"	"Acacia macdonnellensis"
213	"Characters not combined as above (not W.A. or N.T.)"	214
214	"Calyx densely pubescent; phyllodes mostly 2–10 mm wide, with apices normally gently curved or oblique (A.C.T., N.S.W., Vic.)"	"Acacia doratoxylon"
214	"Calyx sparsely hairy at base and apex; phyllodes mostly 2–4 mm wide, with apices mostly straight (Qld, N.S.W.)"	"Acacia caroleae"
215	"Phyllode margins red or brown (SW W.A.)"	"Acacia yorkrakinensis"
215	"Phyllode margins yellow or green"	216
216	"Penultimate branchlets conspicuously flattened and stout (3.5–11 mm wide); lower margin of phyllodes continuous with branchlets (N.S.W.)"	"Acacia pycnostachya"
216	"Penultimate branchlets terete or angled to flattened or triquetrous, ±slender; phyllodes rarely continuous with branchlets"	217
217	"Sepals free or united for less than 1/2 their length; phyllodes 7–22 cm long; ovary hairy (northern W.A., N.T., Qld)"	218
217	"Sepals united for more than 1/2 their length or if not (A. spania) then phyllodes < 7 cm long and ovary glabrous"	219
218	"Pods 5–11 mm wide; branchlets and phyllodes glabrous and commonly pruinose (W.A., N.T.)"	"Acacia tumida"
218	"Pods c. 4 mm wide; branchlets and phyllodes hairy or glabrous and not pruinose (W.A., N.T., Qld)"	"Acacia difficilis"
219	"Spikes interrupted (receptacle clearly visible between flowers, best observed in mature bud); phyllodes (mature plants) falcate; calyx tube glabrous (Qld, N.S.W.)"	"Acacia sparsiflora"
219	"Spikes dense or if subdense (i.e. receptacle not or scarcely visible) then phyllodes ±straight and/or calyx tube hairy"	220
220	"Phyllodes obtuse, erect or upcurved from base, with some of the nerves curved near base and normally confluent with lower margin; most spikes to c. 2 cm long (N.T., Qld)"	"Acacia umbellata"
220	"Phyllodes and spike characters not combined as above"	221
221	"Phyllodes ±straight and symmetrical with margins ±equally convex or straight"	222
221	"Phyllodes falcate OR if straight then obviously inequilateral with a ±straight lower margin and convex upper margin"	228
222	"Phyllodes with l:w < 6"	223
222	"Phyllodes with l:w > 6"	226
223	"Phyllodes 2–4.5 cm long, obtuse (Qld)"	"Acacia spania"
223	"Phyllodes > 5 cm long and/or acute"	224
224	"Phyllodes < 15 mm wide; spikes 1.5–3 cm long (Qld, N.S.W.)"	"Acacia burrowii"
224	"Phyllodes some or all at least 15 mm wide"	225
225	"Calyx tube densely puberulous, resin-hairs absent; spikes pale yellow, 2–4 cm long (Qld, N.S.W.)"	"Acacia blakei"
225	"Calyx tube ±glabrous, lobes with reddish resin-hairs; spikes deep yellow, 3–5 cm long (Qld)"	"Acacia striatifolia"
226	"Phyllode nerves not closely crowded (2–4 per mm); branchlets and phyllodes glabrous (N.S.W., Vic.)"	"Acacia subtilinervis"
226	"Phyllode nerves close together (4–8 per mm)"	227
227	"Branchlets and phyllodes glabrous (Qld, N.S.W.)"	"Acacia burrowii"
227	"Branchlets and phyllodes hairy (indumentum normally appressed) (Qld)"	"Acacia leptostachya"
228	"Peduncles hairy (indumentum commonly minute and appressed, sometimes sparse)"	229
228	"Peduncles glabrous, sometimes scurfy"	237
229	"Phyllodes 15–22 cm long, 6–12 mm wide, strongly falcate and narrowed at both ends (N.T.)"	"Acacia undoolyana"
229	"Phyllode characters not combined as above (not N.T.)"	230
230	"Branchlets (and normally also phyllodes) obviously hairy with spreading or appressed hairs"	231
230	"Branchlets ±glabrous"	234
231	"Branchlets velutinous to pubescent; phyllodes straight, tomentose, sparsely villous or glabrous, 5–10 × 2–4 cm"	232
231	"Characters not combined as in lead 28 above; calyx often golden-hairy"	233
232	"Penultimate branchlets acutely angled to flattened; calyx obviously hairy, with obvious resin-hairs at apex; ovary normally hairy only at apex (N.S.W.)"	"Acacia matthewii"
232	"Penultimate branchlets terete or scarcely angled; calyx ±glabrous; ovary glabrous (Qld)"	"Acacia tenuinervis"
233	"New shoots not resinous, obviously sericeous with golden hairs aging silvery; phyllodes often falcate, 7–23 mm wide (N.S.W., Vic.)"	"Acacia binervia"
233	"New shoots resinous, with resin drying brown and obscuring indumentum; phyllodes not falcate, 2–12 mm wide (Qld)"	"Acacia leptostachya"
234	"Penultimate branchlets acutely angled to flattened; phyllodes bright green; calyx obviously hairy, with obvious resin-hairs at apex; ovary normally hairy only at apex (N.S.W.)"	"Acacia matthewii"
234	"Penultimate branchlets terete or scarcely angled; calyx glabrous or hairy"	235
235	"Ovary usually densely and conspicuously pubescent, with hairs long and covering entire surface; resin-hairs obvious on calyx lobes; spikes bright golden; phyllodes grey-green (N.S.W.)"	"Acacia cheelii"
235	"Ovary glabrous or hairs normally confined to apex; resin-hairs absent or inconspicuous on calyx lobes"	236
236	"Phyllodes 4–22 mm wide, l:w 6–20 (Qld, N.S.W.)"	"Acacia blakei"
236	"Phyllodes 15–30 mm wide, l:w 3.5–6 (Qld)"	"Acacia tenuinervis"
237	"Calyx tube ±glabrous"	238
237	"Calyx tube pubescent to tomentose, sometimes indumentum confined to base"	240
238	"Phyllodes 15–30 mm wide, l:w 3.5–6 (Qld)"	"Acacia tenuinervis"
238	"Phyllodes < 15 mm wide, or if not then l:w > 6"	239
239	"Phyllodes 4–10 mm wide, 2.5–11 cm long (N.S.W., Qld)"	"Acacia burrowii"
239	"Phyllodes normally some or all > 10 mm wide, 5–17 cm long"	"Acacia blakei"
240	"Resin-hairs (red-brown to black) present on calyx lobes (not prominent in A. blakei)"	241
240	"Resin-hairs absent from calyx lobes"	244
241	"Penultimate branchlets acutely angled to flattened; phyllodes bright green; ovary normally hairy only at apex (N.S.W.)"	"Acacia matthewii"
241	"Penultimate branchlets terete or scarcely angled"	242
242	"Spikes bright golden (northern N.S.W. & Hunter R.)"	"Acacia cheelii"
242	"Spikes pale yellow"	243
243	"Branchlets sometimes slightly pruinose; calyx tube glabrous or with white hyaline hairs (Qld, northern N.S.W.)"	"Acacia blakei"
243	"Branchlets usually distinctly pruinose; calyx tube with pale yellow, hyaline hairs (southern N.S.W.)"	"Acacia georgensis"
244	"Spikes bright yellow; hairs on calyx straight or slightly curved; ovary glabrous (N.S.W.)"	"Acacia bulgaensis"
244	"Spikes pale yellow to ±white; hairs on calyx crisped and matted; ovary hairy at base and apex (Qld, N.S.W.)"	"Acacia blakei"
245	"Sepals free or very shortly united at base"	246
245	"Sepals clearly united for 1/4 or more of their length"	293
246	"Phyllodes 10–45 mm wide AND falcate or markedly inequilateral (with lower margin ±straight and upper margin convex)"	247
246	"Phyllodes all < 10 mm wide OR if more then straight to slightly curved and normally ±symmetrical with both margins convex or straight"	253
247	"Peduncles 15–25 mm long; pods woody, not winged, opening elastically from apex (northern W.A. & N.T.)"	"Acacia leptophleba"
247	"Peduncles 2–10 mm long; pods (where known) not as above"	248
248	"Receptacle densely golden-hairy; pods 7–15 mm wide, densely hairy; phyllodes 8–16 cm long, 4–13 mm wide, densely sericeous to glabrescent (NW W.A.)"	"Acacia citrinoviridis"
248	"Receptacle glabrous or white-hairy; pods (where known) < 7 mm wide and/or glabrous; phyllodes normally shorter and/or narrower than above"	249
249	"Pulvinus 5–10 mm long; phyllodes 7–16 cm long, 15–30 (–45) mm wide; pods 3–4 mm wide, terete to subterete"	250
249	"Pulvinus 1–4 mm long; phyllodes often shorter or narrower than above"	251
250	"Branchlets almost terete, not resinous; seeds 5.7–7 mm long (northern W.A., N.T., Qld)"	"Acacia difficilis"
250	"Branchlets angled and resinous at extremities; seeds 3–4 mm long (NE Qld)"	"Acacia meiosperma"
251	"Phyllodes drying light green, with nerves 5 or 6 per mm; pods terete, 2.5–3.5 mm wide; plants not resinous (Qld)"	"Acacia julifera {Acacia julifera subsp. curvinervia}"
251	"Phyllodes normally drying brownish, with nerves 2–4 per mm and subdistant; plants resinous; pods (where known) 6–8 mm wide, margins narrowly winged (northern W.A.)"	252
252	"Phyllodes 3–7 cm long; branchlets obviously ribbed, angular towards extremities"	"Acacia tenuispica"
252	"Phyllodes 7–10 cm long; branchlets obscurely ribbed, terete"	"Acacia lentiginea"
253	"Receptacle moderately to densely hairy (hairs spreading to erect, often glabrous in fruit)"	254
253	"Receptacle glabrous or with clearly appressed hairs"	265
254	"Phyllodes 10–45 mm long, 0.7–3 mm wide, ±loosely hairy, with distinct setose points 1–3 mm long"	255
254	"Phyllodes > 50 mm long and/or > 3 mm wide, often glabrous, with points not setose"	256
255	"Phyllodes 10–25 mm long; pods 3–5 mm wide, submoniliform, ±terete, glabrous or minutely white-puberulous; petals glabrous or white-hairy (W.A., N.T.)"	"Acacia kelleri"
255	"Phyllodes 20–45 mm long; pods c. 10 mm wide, flat, golden (aging white) tomentose; petals golden-hairy (W.A.)"	"Acacia chrysochaeta"
256	"Phyllodes 25–55 mm long, 7–14 mm wide, rounded-obtuse, withred-brown margins and nerves normally of ±uniform prominence; pods 10–12 mm wide, subwoody (S.A.)"	"Acacia tarculensis"
256	"Phyllodes and pods not as above (phyllodes normally longer and/or narrower, often ±acute, and midrib normally more prominent than other nerves)"	257
257	"New shoots with golden or iridescent citron-green hairs; receptacle hairs often golden; peduncles < 5 mm long (arid zone)"	258
257	"New shoots glabrous or white-hairy; receptacle hairs white OR if golden then peduncles > 5 mm long (tropical/subtropical zone)"	259
258	"Mature phyllodes appressed-hairy to glabrescent, with yellow marginal nerves; pods 7–15 mm wide, densely hairy (W.A.)"	"Acacia citrinoviridis"
258	"Mature phyllodes glabrous, with red or yellow marginal nerves; pods 3–7 mm wide, ±glabrous (sometimes ±sparsely hairy when young) (W.A., N.T., S.A.)"	"Acacia olgana"
259	"Peduncles densely hairy, 2–3 mm long; phyllodes 3.5–8.5 cm long, subrigid; pods (not known for A. rigescens) neither undulate nor moniliform (N.T.)"	260
259	"Peduncles glabrous (rarely sparsely hairy), often > 3 mm long; phyllodes often > 9 cm long, ±thin; pods undulate or moniliform"	261
260	"Phyllodes 3–4 mm wide; stipules c. 1 mm long"	"Acacia rigescens"
260	"Phyllodes 4–12 mm wide; stipules 1–2 mm long"	"Acacia conspersa"
261	"Pods strongly moniliform; phyllodes 4–18 mm wide, l:w normally 7–22 (N.T., Qld)"	"Acacia torulosa"
261	"Pods flat, undulate, raised over seeds alternately on each side"	262
262	"Phyllodes narrowly linear, < 4.5 mm wide, l:w normally > 40 (N.T., Qld)"	"Acacia plectocarpa"
262	"Phyllodes narrowly elliptic or oblanceolate, rarely linear, > 4.5 mm wide, l:w normally < 40"	263
263	"Pods < 5 mm wide; seeds ±longitudinal; branchlets prominently angled (N.T., Qld)"	"Acacia armitii"
263	"Pods > 6 mm wide; seeds transverse to oblique; branchlets terete to slightly angular"	264
264	"Petals glabrous or sparsely white-hairy; peduncles 1–6 mm long; pods dark brown (W.A., N.T.)"	"Acacia plectocarpa"
264	"Petals densely yellow-hairy; peduncles (5–) 7–17 mm long; pods yellowish to light brown (N.T.)"	"Acacia echinuliflora"
265	"Pods woody; phyllodes 4–18 cm long, glabrous, finely multistriate with nerves close together, commonly with red or brown margins; peduncles 2–7 mm long (W.A.)"	266
265	"Pods chartaceous to coriaceous or crustaceous OR if woody then other characters not combined as above (phyllode margins never red or brown)"	267
266	"Branchlets and phyllodes pendulous; pods not quadrangular"	"Acacia demissa"
266	"Branchlets not pendulous; phyllodes normally widely spreading; pods quadrangular by prominent wings perpendicular to the face"	"Acacia quadrimarginea"
267	"Phyllodes 1–5.5 cm long and 2–6 mm wide"	268
267	"Phyllodes some or all > 5 cm long and/or > 6 mm wide"	272
268	"Peduncles 2–10 mm long"	269
268	"Peduncles 10–35 mm long"	271
269	"Pods strongly constricted between seeds, breaking into 1-seeded articles, not winged"	"Acacia catenulata"
269	"Pods not constricted between seeds or breaking into 1-seeded articles, narrowly winged or with resinous marginal nerves"	270
270	"Phyllode apices not attenuate; marginal nerves not yellowish; ovary usually with dense scale-like appressed hairs"	"Acacia aneura"
270	"Phyllodes with attenuate apex; marginal nerves prominent, yellowish; ovary with dense white longish appressed hairs"	"Acacia ayersiana"
271	"Stipules persistent, dark brown, 0.5–2 mm long; bark 'Minni Ritchi' (W.A., N.T., Qld)"	"Acacia lysiphloia"
271	"Stipules often caducous, < 1 mm long; bark not 'Minni Ritchi' (W.A., Qld)"	"Acacia sp. Barklys (J.L.Egan 124)"
272	"Branchlets, phyllodes and peduncles glabrous (rarely sparsely hairy in A. plectocarpa) (northern Aust., N of c. 20°S)"	273
272	"Branchlets, phyllodes or peduncles hairy (indumentum often minute and appressed) (S of c. 20°S)"	280
273	"Phyllodes 0.8-1.8 mm wide, 8–16 cm long, 3–7-nerved per face, with narrow (but distinct) spaces between nerves (W.A.)"	"Acacia kimberleyensis"
273	"Phyllodes not as above"	274
274	"Pods opening elastically from apex, woody, 3–9.5 mm wide, sometimes quadrangular in section"	275
274	"Pods not opening elastically from apex, coriaceous to crustaceous, never quadrangular in section"	278
275	"Peduncles 15–25 mm long (W.A., N.T.)"	"Acacia leptophleba"
275	"Peduncles 1.5–4 mm long"	276
276	"Phyllodes to 6 mm wide, normally not tuberculate; branchlets crenulate resin-ribbed (W.A., N.T.)"	"Acacia gonocarpa"
276	"Phyllodes 6–16 mm wide, sparsely tuberculate; branchlets not crenulate resin-ribbed (W.A.)"	277
277	"Phyllodes 3–7 cm long; branchlets obviously ribbed, angular towards extremities"	"Acacia tenuispica"
277	"Phyllodes 7–10 cm long; branchlets obscurely ribbed, terete"	"Acacia lentiginea"
278	"Phyllodes with a distinct, brown, ±setose point 1.5–3 mm long; stipules often persistent, 1–2 mm long; pods 2.5–4.5 mm wide, linear (W.A., N.T., Qld)"	"Acacia hemsleyi"
278	"Phyllodes without setose points; stipules caducous and/or 0.5–1 mm long"	279
279	"Pods strongly moniliform; phyllodes nerves 8–14 per mm (N.T., Qld)"	"Acacia torulosa"
279	"Pods flat, undulate; phyllodes nerves 4–7 per mm (W.A., N.T.)"	"Acacia plectocarpa"
280	"Pulvinus orange, smooth and flared at base; phyllodes 3–6.5 mm wide, ±straight and rigid; peduncles 2–5 mm long, hairy (SW W.A.)"	"Acacia stereophylla"
280	"Pulvinus not as above"	281
281	"Pods strongly contracted between seeds, breaking into one-seeded articles when mature"	"Acacia catenulata"
281	"Pods not strongly contracted between seeds, not breaking into one-seeded articles"	282
282	"Pods turgid, terete to oval or depressed tetragonous in cross-section; seeds longitudinal"	283
282	"Pods flattened; seeds longitudinal or oblique to transverse"	288
283	"Spikes always solitary in axils"	284
283	"Spikes 1–5 in axils, but never consistently solitary"	286
284	"Phyllodes mostly > 15 cm long; spikes 20–40 mm long; peduncles 10–20 mm long (central western W.A.)"	"Acacia anastema"
284	"Phyllodes very rarely > 15 cm long; spikes 5–30 mm long; peduncles 3–15 mm long"	285
285	"Pods cylindrical, abruptly tapered at each end, to 13.5 cm long, 8–10 mm diam.; sepals 0.6–1.2 mm long (all mainland states except Vic.)"	"Acacia ramulosa"
285	"Pods narrowly oblong, oval in section, to 7.5 cm long, 4–6 mm wide; sepals 0.5–0.8 mm long (all mainland states except Vic.)"	"Acacia brachystachya"
286	"Pods cylindrical, abruptly tapered at each end, 8–10 mm diam.; seeds 6–12 mm long(all mainland states except Vic.)"	"Acacia ramulosa"
286	"Pods terete to depressed-tetragonous in section, < 7 mm wide/diam.; seeds 2.2–6.5 mm long"	287
287	"Pods depressed-tetragonous in section, c. 7 mm wide; seeds 5–6.5 mm long (W.A.)"	"Acacia subtessarogona"
287	"Pods terete, 1.5–2 mm wide; seeds 2.2–4 mm long (W.A.)"	"Acacia coolgardiensis"
288	"Phyllodes 5–20 (or more) cm long, l:w > 10"	289
288	"Phyllodes always < 9 cm long, l:w < 10"	290
289	"Seeds ±longitudinal; peduncles 4–9 mm long; pods not winged"	"Acacia clelandii"
289	"Seeds oblique to transverse; peduncles 6–12 mm long; pods with wings 1–2 mm wide"	"Acacia paraneura"
290	"Phyllodes orbicular to broadly obovate or oblong, 1.5–2.5 cm long, 8–12 mm wide; pods with prominent wings c. 3 mm wide (W.A.)"	"Acacia craspedocarpa"
290	"Phyllodes elliptic, broadly lanceolate or falcate, 0.5–9 cm long, 0.8–9 (–13) mm wide; pods with wings to 2 mm wide, or wings absent"	291
291	"Phyllodes 0.5–2.5 (–3) cm long (W.A., N.T., S.A., Qld)"	"Acacia minyura"
291	"Phyllodes 2.5–8.5 cm long"	292
292	"Phyllodes not long-attenuate at apex, without prominent yellowish marginal nerves; calyx sometimes with a few hyaline hairs (all mainland states except Vic.)"	"Acacia aneura"
292	"Phyllodes long-attenuate at apex, prominent yellowish marginal nerves; calyx with long hyaline hairs (W.A., N.T., S.A.)"	"Acacia ayersiana"
293	"Branchlets, phyllodes AND peduncles glabrous (ignore pulvinus)"	294
293	"Branchlets, phyllodes or peduncles hairy to some degree (indumentum often appressed, minute or sparse, sometimes obscured by resin)"	353
294	"Phyllodes some or all more than 25 times longer than wide (ignore young phyllodes at branchlet apices)"	295
294	"Phyllodes all less than 25 times longer than wide"	311
295	"Branchlets ±pruinose"	296
295	"Branchlets not pruinose"	297
296	"Spikes golden; phyllodes 8–19 cm long (N.T. & Qld)"	"Acacia shirleyi"
296	"Spikes lemon yellow; phyllodes pendent, 13–30 cm long (SW W.A.)"	"Acacia lasiocalyx"
297	"Phyllode nerves prominently raised AND/OR subdistant (i.e. with wide inter-nerve spaces), 1–4 per mm; pods opening elastically from the widened apex and/or ±woody"	298
297	"Phyllode nerves not or scarcely raised and very close together, 5–12 per mm; pods neither significantly tapered towards base nor opening elastically from apex (unknown for A. proiantha)"	301
298	"Peduncles < 5 mm long"	299
298	"Peduncles 5 mm long or more (northern W.A., N.T., Qld)"	300
299	"Spikes 15–25 mm long; pods 5–10 mm wide, not tapered towards base; erect shrubs c. 2 m high (Qld)"	"Acacia whitei"
299	"Spikes 4–12 mm long; pods < 5.5 mm wide, clearly tapered towards base; ±prostrate subshrub (northern W.A.)"	"Acacia paula"
300	"Branchlets not resin-ribbed; penultimate branchlets pale yellowish orange or red-brown; phyllode nerves not prominently raised (but marginal nerves discrete)"	"Acacia ancistrocarpa"
300	"Branchlet apices with prominent, crenulate, resin-ribs; penultimate branchlets ±yellow; phyllode nerves prominent and raised"	"Acacia drepanocarpa"
301	"Phyllodes linear, 13–34 × 0.6–2 cm; spikes clearly interrupted; flowers large (c. 3 mm long); pods woody, to 15 × 2 cm (W.A., N.T.)"	"Acacia pachycarpa"
301	"Characters not combined as above"	302
302	"Phyllodes normally widely spreading and recurved, with red- or brown-resinous margins; pods quadrangular by marginal wings perpendicular to face, 7–12 mm wide, woody (W.A.)"	"Acacia quadrimarginea"
302	"Phyllodes normally ascending to erect and ±straight, without red- or brown-resinous margins; pods chartaceous to coriaceous or crustaceous, not quadrangular, < 7 mm wide (except A. stowardii)"	303
303	"Bark 'Minni Ritchi' (at least on upper branches); phyllodes with nerves normally of uniform prominence"	304
303	"Bark not 'Minni Ritchi'; phyllodes commonly with the central nerve slightly to evidently more pronounced than the rest"	305
304	"Phyllodes to 10 cm long, 2.5–8 mm wide, not acuminate; 'Minni Ritchi' bark extending to base of main trunks (W.A., N.T.)"	"Acacia rhodophloia"
304	"Phyllodes 12–23 cm long, c. 1–2.3 mm wide, acuminate; 'Minni Ritchi' bark replaced by a grey fibrous layer on c. lowest 2 m of main trunks (N.T.)"	"Acacia desmondii"
305	"Phyllodes acuminate with obviously recurved tips (SW W.A.)"	306
305	"Phyllodes not acuminate and/or tips straight (not SW W.A.)"	307
306	"Phyllodes all or mostly > 3 mm wide"	"Acacia conniana"
306	"Phyllodes 1–3 mm wide"	"Acacia resinimarginea"
307	"Peduncles 4–15 mm long; spikes dense, 8–25 mm long (normally not more than twice peduncle length) (arid zone: W.A., N.T. & Qld)"	"Acacia adsurgens"
307	"Characters not combined as above (spikes more than twice length of peduncles)"	308
308	"Spikes to 1 cm long; peduncles 0.5–3.5 mm long; phyllodes 8–22 cm long, 1.5–3.5 mm wide (Qld, N.S.W.)"	"Acacia granitica"
308	"Spikes and/or peduncles longer than above"	309
309	"Phyllodes 11–17.5 cm long, 1–1.5 mm wide, midrib clearly evident; spikes 1–2 cm long; peduncles 4–6 mm long (N.T.)"	"Acacia proiantha"
309	"Characters not combined as above"	310
310	"Phyllodes 8–19 cm long, with central nerve slightly to markedly more pronounced than rest; trees to 15 m high (N.T., Qld)"	"Acacia shirleyi"
310	"Phyllodes 1.5–12.5 cm long, with nerves commonly of uniform prominence; shrubs or trees to 5 m high (W.A., N.T., Qld)"	"Acacia sibirica"
311	"Bark ±'Minni Ritchi'"	312
311	"Bark not 'Minni Ritchi'"	314
312	"Phyllodes 1–5 cm long, 1.2–5 (–7) mm wide, with a short but distinct apical cusp and nerves 2–4 per mm and clearly separated from one another; stipules persistent; viscid shrubs (W.A., N.T., Qld)"	"Acacia lysiphloia"
312	"Phyllodes lacking an apical cusp, with nerves close together and 5–12 per mm; stipules caducous or insignificant"	313
313	"Phyllodes 6–10 cm long, 8–20 mm wide, commonly inequilateral with lower margin ±straight and upper margin convex, sometimes falcate; ±resinous trees (Qld)"	"Acacia rhodoxylon"
313	"Phyllodes mostly 2.5–10 cm long and 2–8 mm wide, normally ±symmetrical with both margins straight or convex; resinous shrubs or trees (W.A., N.T.)"	"Acacia rhodophloia"
314	"Phyllodes linear, 13–34 × 0.6–2 cm; spikes clearly interrupted; flowers large (c. 3 mm long); pods woody, to 15 × 2 cm (W.A., N.T.)"	"Acacia pachycarpa"
314	"Characters not combined as above"	315
315	"Peduncles all or mostly > 10 mm long"	316
315	"Peduncles 1.5–10 mm long"	326
316	"Branchlet apices with prominent, crenulate, resin-ribs; phyllode nerves widely spaced, prominent and sometimes raised"	317
316	"Branchlet apices not as above; phyllode nerves not prominently raised"	318
317	"Penultimate branchlets yellow to pale brown; calyx c. 3/4-united or more (northern W.A., N.T., Qld)"	"Acacia drepanocarpa"
317	"Penultimate branchlets red-brown; calyx c. 1/2-united (W.A.)"	"Acacia ptychophylla"
318	"Phyllode mucro ±setose (distinct & brown); stipules often persistent; phyllodes mostly 5–12 cm × 5–12 mm (northern W.A., N.T., Qld)"	"Acacia hemsleyi"
318	"Characters not combined as above"	319
319	"Phyllodes 1–6 cm long, 1–6 mm wide; pods woody; spikes about as long as peduncles"	320
319	"Characters not combined as above"	321
320	"Calyx dissected for 1/2–4/5 its length into narrow lobes (W.A., N.T., Qld)"	"Acacia sp. Barklys (J.L.Egan 124)"
320	"Calyx shallowly dissected (for c. 1/5 its length) into broadly triangular lobes (W.A.)"	"Acacia sphaerostachya"
321	"Pods chartaceous; phyllode nerves very close together (inter-nerve spaces not more than twice nerve width), 7–12 per mm (arid zone)"	322
321	"Pods ±woody; phyllode nerves normally distinctly separated (inter-nerve spaces more than twice nerve width: nerves sometimes obscured by fine surface wrinkling), 2–8 per mm (tropical/subtropical species, except A. ancistrocarpa)"	323
322	"Phyllodes 4–15 (–25) mm wide, l:w = 3–13; pods 10–20 mm wide, seeds transverse to slightly oblique (W.A., N.T., S.A., Qld)"	"Acacia kempeana"
322	"Phyllodes 1–4 (–9) mm wide, l:w = 9–40; pods 4–7 (–11) mm wide; seeds longitudinal to oblique (W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia sibirica"
323	"Corolla large (3–4 mm long); spikes clearly interrupted (N.T., Qld)"	"Acacia megalantha"
323	"Corolla smaller tahn above; spikes dense or subdense"	324
324	"Calyx deeply dissected for 1/2 or more its length into narrow lobes; pods ±longitudinally nerved (W.A., N.T.)"	"Acacia leptophleba"
324	"Calyx shallowly dissected (for less than 1/2 its length) into broadly triangular lobes; pods obliquely nerved"	325
325	"Phyllodes with l:w > 7, normally gradually narrowed at apex to an acute tip; mucro not thick and knob-like (W.A., N.T., Qld)"	"Acacia ancistrocarpa"
325	"Phyllodes with l:w = 2–7, ±abruptly narrowed at apex to a distinct, thickened, knob-like mucro (W.A., N.T.)"	"Acacia stigmatophylla"
326	"Phyllodes 7–30 mm long; branchlet apices angled by prominent, often crenulate, resin-ribs (northern W.A., N.T., Qld)"	"Acacia wickhamii"
326	"Phyllodes some or all > 30 mm long and/or branchlets not as above"	327
327	"Phyllodes with 2 acentral nerves more prominent than rest; pods papery, 5–8 mm wide (northern W.A., N.T., Qld)"	"Acacia hammondii"
327	"Phyllodes with nerves of uniform prominence OR midnerve (and sometimes 1 or 2 on either side of it) more prominent than rest"	328
328	"Phyllodes with a distinct, brown, ±setose point 1.5–3 mm long, mostly 5–12 cm long and 5–12 mm wide; stipules often persistent (northern W.A., N.T., Qld)"	"Acacia hemsleyi"
328	"Characters not combined as above"	329
329	"Branchlets obviously flattened towards apices; spikes ±white; pods woody, opening elastically from apex (Qld)"	330
329	"Characters not combined as above"	331
330	"Pods valves deeply grooved; phyllodes mostly 6–12 mm wide; shrubs to c. 5 m high"	"Acacia calyculata"
330	"Pod valves not deeply grooved; phyllodes 15–25 (–32) mm wide; shrubs to 2.5 m high"	"Acacia solenota"
331	"Pods woody, 5–35 (–45) mm wide and commonly opening elastically from apex"	332
331	"Pods chartaceous to coriaceous or crustaceous, OR if subwoody then < 5 mm wide or the phyllode nerves very close together (< 0.3 mm apart and more than 4 per mm)"	341
332	"Pods quadrangular in section; phyllodes 2–7 mm wide, with nerves numerous and close together (5–9 per mm), normally with red- or brown-resinous margins (southern W.A.)"	"Acacia quadrimarginea"
332	"Pods not quadrangular; phyllode characters not combined as above (not southern W.A.)"	333
333	"Phyllodes falcate or obviously inequilateral (lower margin ±straight, upper margin convex), 5–27 cm long, 5–45 mm wide, with nerves close together (4–8 per mm); pods 10–35 (–45) mm wide, not opening elastically from apex"	334
333	"Phyllodes ±straight and symmetrical OR if as above then phyllodes < 7 mm wide or nerves clearly distant (mostly 0.3–0.6 mm apart and 1–4 per mm) or pods opening elastically from apex"	335
334	"Pods normally 25–35 mm wide; funicle-aril > 25 mm long when fully extended (Qld, PNG)"	"Acacia crassicarpa"
334	"Pods 10–20 mm wide; funicle-aril 8–25 mm long when fully extended (W.A., N.T., Qld, N.S.W., PNG)"	"Acacia aulacocarpa"
335	"Pods and branchlets yellow to pale brown; calyx diaphanous, membranous, white; phyllode nerves often raised"	336
335	"Pods and branchlets dark coloured; calyx not as above (drying brownish)"	337
336	"Peduncles 2–4 mm long; branchlet apices not as above (northern N.T.)"	"Acacia oncinocarpa"
336	"Peduncles 6–15 mm long; branchlet apices with prom-inent, crenulate, resin-ribs (northern W.A., N.T., Qld)"	"Acacia drepanocarpa"
337	"Phyllodes 4–8 cm long, 3–5 mm wide, l:w = 12–20 (Qld)"	"Acacia polyadenia"
337	"Phyllode characters not combined as above"	338
338	"Bracteoles sessile; phyllode nerves (except central one) normally translucent, not raised and drying dark brownish; peduncles 4–6 mm long (N.T., Qld)"	"Acacia hyaloneura"
338	"Bracteoles stipitate; phyllode nerves yellow and/or slightly raised"	339
339	"Phyllodes 2.5–7 cm long, 6–23 mm wide, l:w = 2–7, ±abruptly narrowed at apex to a distinct, thickened, knob-like mucro (W.A., N.T.)"	"Acacia stigmatophylla"
339	"Phyllodes mostly 5–18 cm long, 1.5–10 mm wide; mucro not knob-like"	340
340	"Peduncles c. 3 mm long; pods not obliquely reticulately nerved (Qld)"	"Acacia whitei"
340	"Peduncles > 3 mm long; pods obliquely reticulately nerved (W.A., N.T., Qld)"	"Acacia ancistrocarpa"
341	"Phyllodes 4–8 mm wide, thin textured, with nerves clearly separated from one another (0.3–0.5 mm apart); peduncles 1.5–2 mm long (N.T.)"	"Acacia scopulorum"
341	"Characters not combined as above"	342
342	"Branchlets acutely angled, especially towards apices; spikes dense (northern W.A., N.T., Qld)"	"Acacia gonoclada"
342	"Branchlets terete, sometimes ribbed"	343
343	"Branchlets vernicose (appearing varnished); phyllodes mostly 9–17 × 2–4 cm, often curved upwards from much narrowed base; flowers large (northern W.A., N.T., Qld)"	"Acacia laccata"
343	"Branchlets not vernicose; phyllodes not as above"	344
344	"Phyllodes falcately recurved OR obviously inequilateral with a ±straight lower margin and a clearly convex upper margin"	345
344	"Phyllodes straight (with both margins ±straight or convex) to slightly incurved or slightly recurved over entire length, or obviously recurved only towards apices"	347
345	"Pulvinus 5–10 mm long; pods 5–8 mm wide, flat; branchlets sometimes pruinose (NW W.A.)"	"Acacia hamersleyensis"
345	"Pulvinus 2–4 mm long; pods 2–5 mm wide, terete to flat; branchlets not pruinose (except sometimes in A. shirleyi) (not W.A.)"	346
346	"Spikes ±interrupted; pods ±submoniliform; phyllodes mostly 10–19 cm long and 2–9 mm wide (N.T., Qld)"	"Acacia shirleyi"
346	"Spikes ±dense; pods straight-edged"	"Acacia julifera"
347	"Pulvinus (3–) 5–10 mm long; pods hairy, 5–8 mm wide; phyllodes (5–) 8–14 cm long (NW W.A.)"	"Acacia hamersleyensis"
347	"Pulvinus 2–4 mm long; pods glabrous"	348
348	"Phyllodes with narrow but distinct spaces between the nerves (N.S.W., Vic.)"	"Acacia subtilinervis"
348	"Phyllodes with nerves very close together"	349
349	"Phyllodes with nerves of uniform prominence or the central 1–3 slightly more evident than the rest, normally < 9 cm long; pods 4–20 mm wide, chartaceous"	350
349	"Phyllodes with central nerve clearly more evident than rest, normally > 9 cm long; pods 3–5 mm wide, ±crustaceous or coriaceous"	352
350	"Trees to 10 m high; phyllodes 2.5–8 mm wide, l:w = 9–20 (–35); pods 5–9 mm wide; seeds oblique (Qld)"	"Acacia aprepta"
350	"Shrubs or trees to 5 m high"	351
351	"Phyllodes 4–15 (–25) mm wide, l:w = 3–13; pods 10–20 mm wide; seeds transverse to slightly oblique (W.A., N.T., S.A., Qld)"	"Acacia kempeana"
351	"Phyllodes 1–4 (–8) mm wide, l:w = 9–40; pods 4–7 (–11) mm wide; seeds longitudinal to oblique (W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia sibirica"
352	"Spikes ±interrupted; calyx less than 1/2 length of corolla; pods ±submoniliform (N.T., Qld)"	"Acacia shirleyi"
352	"Spikes dense; calyx 1/2 or more length of corolla; pods straight-edged (SW W.A.)"	"Acacia conniana"
353	"Phyllodes some or all > 10 mm wide"	354
353	"Phyllodes not more than 10 mm wide"	364
354	"Phyllodes 4–8 × 1.5–3.5 cm, densely clothed with silky, appressed, silvery hairs; pods woody, narrowed towards base, with indumentum as on phyllodes (northern W.A., N.T., Qld)"	"Acacia argyraea"
354	"Characters not combined as above"	355
355	"Branchlets acutely angled; spikes dense; pods 3–4 mm wide (northern W.A., N.T., Qld)"	"Acacia gonoclada"
355	"Branchlets terete"	356
356	"Phyllodes falcately curved OR obviously inequilateral with a ±straight lower margin and a clearly convex upper margin"	357
356	"Phyllodes ±straight and with both margins straight to shallowly convex"	360
357	"Spikes interrupted (best observed in mature bud); pods 3–5 mm wide (NW W.A.)"	"Acacia distans"
357	"Spikes dense"	358
358	"Pulvinus 2–4 mm long; pods 2–5 mm wide"	"Acacia julifera"
358	"Pulvinus 5–10 mm long"	359
359	"Peduncles densely hairy; phyllodes l:w = 3–5; pods c. 3 mm wide, glabrous (NE Qld)"	"Acacia meiosperma"
359	"Peduncles sparsely hairy; phyllodes l:w = 6–12; pods 5–8 mm wide, hairy (NW W.A.)"	"Acacia hamersleyensis"
360	"Spikes to 1 cm long; pods 4–5 mm wide (SW W.A.)"	"Acacia incanicarpa"
360	"Spikes 2–7 cm long"	361
361	"Branchlets with dense, spreading minute hairs (Qld, N.S.W.)"	"Acacia pubifolia"
361	"Branchlets glabrous or appressed-hairy"	362
362	"Phyllodes with 3 or more major nerves confluent with lower margin near base; peduncles 1–3 mm long; pods terete, 3 mm wide (W.A., N.T., Qld, ?S.A.)"	"Acacia acradenia"
362	"Phyllode nerves not basally concurrent; peduncles 3–15 mm long; pods not terete, 5–15 mm wide (NW W.A.)"	363
363	"Spikes interrupted; calyx 1/6–1/3 length of corolla, often yellow-hairy; pods glabrous"	"Acacia xiphophylla"
363	"Spikes dense; calyx 1/2–2/3 length of corolla, white-hairy; pods hairy"	"Acacia hamersleyensis"
364	"Bark 'Minni Ritchi'"	365
364	"Bark not 'Minni Ritchi'"	371
365	"Phyllodes 1–5 cm long, linear-oblanceolate, with obvious and eccentric mucro; peduncles 1–3.5 cm long (northern W.A., N.T., Qld)"	"Acacia lysiphloia"
365	"Phyllodes > 5 cm long OR if shorter then characters not combined as above"	366
366	"Spikes interrupted, c. 3 mm wide, ±cream; pods very viscid, narrowly winged (northern W.A.)"	"Acacia delibrata"
366	"Spikes dense OR > 4 mm wide, yellow to golden; pods neither viscid nor winged"	367
367	"Spikes ±sessile and 5–7 mm long; phyllodes striate by fine, close nerves, appressed-hairy, glabrescent (Qld, N.S.W.)"	"Acacia curranii"
367	"Spike characters not combined as above"	368
368	"Phyllodes with less than 10, distant and/or raised nerves on each face; pods hairy (SW W.A.)"	369
368	"Phyllodes with more than 10, close, very fine (not raised) nerves"	370
369	"Phyllodes and branchlets ±glabrous"	"Acacia oncinophylla"
369	"Phyllodes and branchlets obviously appressed-hairy"	"Acacia fauntleroyi"
370	"Spikes clearly interrupted; phyllodes 7–15 cm long; bark orange-red (NW W.A.)"	"Acacia cyperophylla"
370	"Spikes ±dense; phyllodes (1.5–) 2.5–10 cm long; bark dark red to maroon (arid zone: W.A., N.T.)"	"Acacia rhodophloia"
371	"Peduncles and receptacles pubescent-tomentulose with dense, ±spreading, often crisped hairs"	372
371	"Peduncles or receptacles glabrous OR if both hairy then hairs usually sparse, straight or closely appressed"	377
372	"Phyllodes narrowly linear, > 8 cm long and < 3 mm wide (northern N.T.)"	"Acacia brockii"
372	"Phyllodes shorter or wider than above"	373
373	"Phyllodes obviously falcately curved OR obviously inequilateral with a ±straight lower margin and a clearly convex upper margin; apices not setose"	"Acacia julifera"
373	"Phyllodes straight or very shallowly curved, with apical points normally distinct and often setose"	374
374	"Phyllodes with nerves of uniform prominence, 3–5.5 cm long, 2–4 mm wide (N.T., rare)"	"Acacia malloclada"
374	"Phyllodes with 1 or 2 nerves more prominent than rest, normally wider or longer than above"	375
375	"Stipules caducous; phyllodes 6–12 cm long, the most prominent nerve acentral; mature pods glabrous (Qld, PNG)"	"Acacia pubirhachis"
375	"Stipules persistent, 2–4 mm long; phyllodes with the most prominent nerve central; pods hairy"	376
376	"Phyllodes 3–10.5 cm long, 4–8 mm wide; pods puberulous-scurfy (northern N.T.)"	"Acacia multistipulosa"
376	"Phyllodes 2–4.5 cm long, 1.5–3 mm wide; pods densely tomentose (northern W.A.)"	"Acacia chrysochaeta"
377	"Phyllodes normally widely spreading, shallowly recurved and with red- or brown-resinous margins; pods quadrangular by marginal wings perpendicular to face, 7–12 mm wide (W.A.)"	"Acacia quadrimarginea"
377	"Phyllode characters not combined as above; pods not quadrangular"	378
378	"Receptacle appressed-hairy (indumentum sparse to dense)"	379
378	"Receptacle glabrous or with sparse spreading hairs"	386
379	"All phyllodes < 4 mm wide"	380
379	"All phyllodes > 3.5 mm wide"	382
380	"Spikes interrupted, 10–34 mm long; phyllodes usually silvery-sericeous"	"Acacia cuthbertsonii"
380	"Spikes dense, 5–30 mm long; phyllodes appressed-pubescent between nerves"	381
381	"Pods cylindrical, abruptly tapered at each end, to 13.5 cm long, 8–10 mm diam.; sepals 0.6–1.2 mm long"	"Acacia ramulosa"
381	"Pods narrowly oblong, oval in section, to 7.5 cm long, 4–6 mm wide; sepals 0.5–0.8 mm long"	"Acacia brachystachya"
382	"Spikes 7–12 mm long, not interrupted; phyllodes ±straight and often obtuse (W.A.)"	383
382	"Spikes > 12 mm long, ±interrupted (best observed in mature bud); phyllodes often acute (not SW W.A.)"	384
383	"Peduncles 4–7 mm long; pods 2–3 mm wide, terete"	"Acacia coolgardiensis"
383	"Peduncles 2–3 mm long; pods 4–5 mm wide, flat"	"Acacia incanicarpa"
384	"Phyllodes falcately curved and thin; pods 3–5 mm wide (NW W.A.)"	"Acacia distans"
384	"Phyllodes ±straight and rigid; pods 7–22 mm wide"	385
385	"Spikes 3–4 mm wide at anthesis; pods yellowish and normally coarsely wrinkled (arid zone: W.A., N.T.)"	"Acacia cuthbertsonii"
385	"Spikes 5–7 mm wide at anthesis; pods dark brown and smooth (NW W.A.)"	"Acacia xiphophylla"
386	"Pulvinus orange, smooth and flared at base; spikes 13–35 mm long; peduncles 2–5 mm long (SW W.A.)"	"Acacia stereophylla"
386	"Pulvinus not as above (normally yellowish and transversely wrinkled, not flared at base)"	387
387	"Spikes not more than 15 mm long"	388
387	"Spikes some or all > 15 mm long"	391
388	"Phyllodes 0.8–3 mm wide; prostrate or semi-prostrate subshrub (northern W.A.)"	"Acacia paula"
388	"Phyllodes 3–14 mm wide; tall erect shrubs (southern W.A.)"	389
389	"Phyllodes 8–19 cm long, 3–6 mm wide, subglabrous, with midnerve conspicuous and raised; peduncles 3.5–9 mm long; pods 5–6 mm wide"	"Acacia ampliata"
389	"Characters not combined as above (phyllodes normally shorter and/or broader and more densely hairy than above)"	390
390	"Peduncles 4–7 mm long; pods 2–3 mm wide, terete"	"Acacia coolgardiensis"
390	"Peduncles 2–3 mm long; pods 4–5 mm wide, flat"	"Acacia incanicarpa"
391	"Phyllodes with 2 acentral nerves more prominent than rest (northern W.A., N.T., Qld)"	"Acacia hammondii"
391	"Phyllodes with nerves of uniform prominence OR midnerve (and sometimes 1 or 2 on either side of it) more prominent than rest"	392
392	"Phyllodes more than 15 times longer than wide"	393
392	"Phyllodes < 15 times longer than wide"	395
393	"Phyllodes of mature plants moderately hairy, falcate, mostly > 6 mm wide (Qld)"	"Acacia julifera"
393	"Phyllodes glabrous, normally linear, 1.5–5 mm wide and straight or shallowly curved (some Qld specimens of A. shirleyi to 11 mm wide or falcate)"	394
394	"Peduncles 1–3 mm long (W.A.)"	"Acacia eriopoda"
394	"Peduncles (3–) 5–9 mm long (N.T., Qld)"	"Acacia shirleyi"
395	"Phyllodes falcately recurved OR obviously inequilateral with a ±straight lower margin and a clearly convex upper margin"	396
395	"Phyllodes ±straight (W.A.)"	397
396	"Pulvinus 5–10 mm long; pods 5–8 mm wide, flat, slightly undulate (NW W.A.)"	"Acacia hamersleyensis"
396	"Pulvinus 2–4 mm long; pods 2–5 mm wide, terete to subterete"	"Acacia julifera"
397	"Phyllodes glaucous to subglaucous; pulvinus 4–10 mm long; stipules caducous"	"Acacia hamersleyensis"
397	"Phyllodes green; pulvinus 1–2 mm long; stipules often persistent"	"Acacia daweana"
398	"Phyllodes absent, rudimentary or reduced to scales"	399
398	"Phyllodes present and normally numerous and conspicuous (occasionally few and/or difficult to distinguish from branchlets)"	409
399	"Heads 20–40-flowered; petals not striate; flowers mostly 5-merous"	400
399	"Heads 1–17-flowered"	404
400	"Divaricately branched shrubs with numerous, short, rigid, widely spreading, ±spinose (sharply or coarsely pungent) branchlets"	401
400	"Characters not as above (branchlets innocuous or coarsely spinose, tortuous or relatively straight, sparingly divided and ascending to erect) (W.A.)"	402
401	"Branchlets green, striate-ribbed; pods moniliform, 6–12 mm wide (W.A., N.T.)"	"Acacia wiseana"
401	"Branchlets glaucous, with ribs few and obscure; pods linear, 3–4 mm wide (SW W.A.)"	"Acacia aphylla"
402	"Heads in elongated racemes 1–6 cm long, enclosed when young by conspicuous brown bracts; rush-like shrub with green or sometimes glaucous stems"	"Acacia restiacea"
402	"Heads in rudimentary, usually 1-headed racemes up to 1 mm long"	403
403	"Intricate shrub with tortuous, green or brown branchlets; peduncles 3–4 mm long; pods 3–4 mm wide; phyllodes rudimentary, reduced to horn-like projections to 1 mm long"	"Acacia cerastes"
403	"Fastigiate shrub with rather straight, ash grey branchlets; peduncles 5–10 mm long; pods 5–7 mm wide"	"Acacia exocarpoides"
404	"Petals finely flabellate-striate (best observed in buds at ×10 mag.); branchlets not spinose; pods ±quadrangular (not known for A. volubilis) (SW W.A.)"	405
404	"Petals not striate; branchlets ±spinose (sharply or coarsely pungent); pods linear to moniliform"	408
405	"Flowers 4-merous; peduncles 4–15 mm long, glabrous or sparsely hairy"	406
405	"Flowers 5-merous; peduncles 0–5 mm long, densely hairy"	407
406	"Heads 1–4-flowered; pods 4–5 mm wide"	"Acacia tetragonocarpa"
406	"Heads 8–12-flowered; pods 8–10 mm wide"	"Acacia cummingiana"
407	"Branches obviously tortuous; stipules 0.5 mm long, subspinose (basal portions persistent as tooth-like projections)"	"Acacia volubilis"
407	"Branches ±straight; stipules 1.5–3 mm long, not spinose"	"Acacia carens"
408	"Heads on peduncles 7–15 mm long, 14–16-flowered; pods c. 10 mm wide (W.A.)"	"Acacia microcalyx"
408	"Heads ±sessile, 3–8-flowered; pods 2–3 mm wide (S.A., Vic.)"	"Acacia spinescens"
409	"Branchlets winged usually by decurrent phyllodes (wings broad or narrow)"	410
409	"Branchlets angled to terete, not winged (but phyllodes sometimes continuous with branchlets)"	423
410	"Petals flabellate-striate (best observed in buds at ×10 mag.); flowers 4-merous; pods quadrangular by winged margins (SW W.A.)"	"Acacia stenoptera"
410	"Petals not flabellate-striate (veinless or with 1 central vein); flowers 5-merous (except A. incurva); pods not quadrangular"	411
411	"Wings occurring in a single plane on opposite sides of the branchlets; phyllodes not sharply pungent (except sometimes in A. alata)"	412
411	"Wings occurring in 3 or more planes on branchlets; phyllodes pungent or not"	417
412	"Glands 1–3 on prominently raised angles along upper margin of free portion of phyllode (SW W.A.)"	"Acacia alata"
412	"Glands not on raised angles"	413
413	"Sepals ±free or very shortly united at base; pods 2–5 mm wide; seeds longitudinal in pods; heads 16–80-flowered, golden to light golden"	414
413	"Sepals united to near apex; pods 7–15 mm wide; seeds transverse in pods; heads 10–21-flowered, golden, white, or cream to pale lemon yellow (SW W.A.)"	416
414	"Racemes 1–10 cm long; heads 10–15 mm diam. at anthesis, 60–70-flowered; pods linear, to 12 cm long (W.A.)"	"Acacia pterocaulon"
414	"Racemes extremely reduced, to 1.5 mm long; heads 5–6 mm diam. at anthesis (dry); pods curved to coiled and twisted, to 2 cm long (SW W.A.)"	415
415	"Heads 30–80-flowered; phyllodes glaucous, with free portion acute, densely tomentulous in axils"	"Acacia glaucoptera"
415	"Heads 16–23-flowered; phyllodes green to subglaucous, with free portion rounded, minutely resin-haired in axils"	"Acacia bifaria"
416	"Heads white or cream to pale lemon yellow; phyllodes grey-green to glaucous; pods 10–15 mm wide"	"Acacia willdenowiana"
416	"Heads golden; phyllodes dark green; pods 7–8 mm wide"	"Acacia applanata"
417	"Phyllodes 10–20 × 2–4 mm, few and scattered, innocuous, not continuous with the narrowly winged branchlets (SW W.A.)"	"Acacia deficiens"
417	"Phyllodes not as above"	418
418	"Phyllodes elliptic to obovate, 1–7 cm wide, innocuous; heads densely 35–130-flowered"	419
418	"Phyllodes ±linear to terete, < 1 cm wide, normally sharply pungent; heads 6–32-flowered (SW W.A.)"	420
419	"Inflorescences simple, initiated synchronously with phyllodes on new shoots; peduncles 10–25 mm long (southern W.A., S.A.)"	"Acacia anceps"
419	"Inflorescences elongated racemes 3–8 (–15) cm long; peduncles 3–7 mm long (SW W.A.)"	"Acacia splendens"
420	"Flowers 4-merous; heads closely sessile; pods terete, not constricted between seeds"	"Acacia incurva"
420	"Flowers 5-merous; heads on peduncles 3–15 mm long; pods not as above"	421
421	"Phyllodes 6–24 cm long, mucronate, linear and often resembling branchlets"	"Acacia extensa"
421	"Phyllodes < 6 cm long, ±pungent, linear to linear-lanceolate or narrowly triangular, straight or curved"	422
422	"Phyllodes glaucous to subglaucous, free portion normally 2–10 mm long; aril facing apex of pod"	"Acacia daviesioides"
422	"Phyllodes green, free portion 10–40 (–60) mm long; aril facing base of pod"	"Acacia trigonophylla"
423	"Phyllodes all whorled in regular or sometimes oblique whorls which are clearly separated from one another"	424
423	"Phyllodes scattered, spiral, fasciculate or opposite (occasionally a few subwhorled)"	446
424	"Phyllodes pungent (SW W.A.)"	425
424	"Phyllodes not pungent, though commonly abruptly mucronate (northern arid and tropical Aust., N.S.W.)"	427
425	"Flowers 4-merous"	"Acacia simulans"
425	"Flowers 5-merous"	426
426	"Branchlets ribbed; phyllodes 10–30 (–40) mm long; heads cream to pale yellow; pods striate, 2.5–3.5 mm wide"	"Acacia cedroides"
426	"Branchlets not ribbed; phyllodes normally 8–19 mm long, sometimes shorter; heads golden; pods not striate, 5–7 mm wide"	"Acacia sphacelata"
427	"Plants quite prostrate"	428
427	"Plants erect or spreading, occasionally sprawling"	430
428	"Flowers 6–8 per head; calyx 1.8–2 mm long (NW W.A.)"	"Acacia mitodes"
428	"Flowers 16–25 per head; calyx 0.5–0.8 mm long"	429
429	"Phyllodes 6–9 per whorl, prominently uncinate; stipules 1.5–2 mm long; calyx lobes triangular (N.T.)"	"Acacia repens"
429	"Phyllodes 9–12 per whorl with straight or slightly curved mucro; stipules c. 1 mm long; calyx lobes irregular, rounded (northern W.A.)"	"Acacia hypermeces"
430	"Corolla lobes not or obscurely striate"	431
430	"Corolla lobes striate"	438
431	"Stipules typically absent, if present then minute; phyllodes commonly 5–7 per whorl (Qld, N.S.W.)"	"Acacia baueri"
431	"Stipules prominent; phyllodes commonly 8 or more per whorl"	432
432	"Calyx glabrous"	433
432	"Calyx lobes hairy at least in part"	436
433	"Stipules 3–4.5 mm long (NW W.A.)"	"Acacia capillaris"
433	"Stipules < 3 mm long"	434
434	"Plant not viscid (northern W.A.)"	"Acacia zatrichota"
434	"Plant viscid"	435
435	"Phyllodes 8–12 (–14) per whorl; mucro < 1 mm long; calyx 0.8–1.2 mm long (W.A., N.T., Qld)"	"Acacia spondylophylla"
435	"Phyllodes 15–20 per whorl; mucro 2.5–3 mm long; calyx c. 1.5 mm long (northern W.A.)"	"Acacia smeringa"
436	"Calyx 0.4–0.6 mm long (NW W.A.)"	"Acacia hippuroides"
436	"Calyx > 1 mm long"	437
437	"Calyx c. 1.2 mm long; phyllode mucro 1–1.5 mm long (NE Qld)"	"Acacia longipedunculata"
437	"Calyx 1.7–2.2 mm long; phyllode mucro 0.2–0.5 mm long (SE Qld)"	"Acacia porcata"
438	"Calyx lobes broadly triangular or rounded"	439
438	"Calyx lobes linear or subulate"	442
439	"Flowers 25–35 per head; seeds transverse or slightly oblique (northern W.A., N.T.)"	"Acacia orthotricha"
439	"Flowers 10–25 per head; seeds longitudinal"	440
440	"Phyllodes 14–18 per whorl; stipules 3–4.5 mm long; pods not viscid (NW W.A.)"	"Acacia capillaris"
440	"Phyllodes 5–11 per whorl; stipules 0.4–3 mm long; pods viscid"	441
441	"Branchlets velvety-tomentose; pods sessile (arid zone: W.A., N.T., Qld)"	"Acacia chippendalei"
441	"Branchlets pubescent, puberulous or glabrous; pods stipitate (northern W.A., N.T., Qld)"	"Acacia galioides"
442	"Phyllode mucro 2–4 mm long; flowers 40–50 per head (W.A.)"	"Acacia anasilla"
442	"Phyllode mucro (if present) to 1.5 mm long; flowers usually fewer than 40 per head"	443
443	"Phyllodes usually 2–5 mm long, occasionally to 9 mm; branchlets not viscid"	444
443	"Phyllodes usually 8–15 mm long, occasionally as short as 6 mm; branchlets or at least stipules viscid"	445
444	"Phyllodes 6–10 per whorl; mucro oblique, to 0.2 mm long, or absent; seeds transverse or slightly oblique (northern W.A., N.T.)"	"Acacia adoxa"
444	"Phyllodes 10–14 per whorl; mucro curved, commonly 1–1.5 mm long; seeds longitudinal (northern W.A., N.T.)"	"Acacia lycopodiifolia"
445	"Stipules 2–3 mm long; phyllodes 8–15 mm long; calyx 0.9–1.5 mm long (northern W.A., N.T.)"	"Acacia perryi"
445	"Stipules < 2 mm long; phyllodes typically < 8 mm long; calyx 0.6–0.9 mm long (northern W.A., N.T., Qld)"	"Acacia asperulacea"
446	"Phyllodes terete to subterete, trigonous, quadrangular, pentagonal, hexagonal or plano-convex in section"	447
446	"Phyllodes flat (although when very narrow and thick they may approach subterete or slightly rhombic in section)"	764
447	"Phyllodes clearly continuous with branchlets (lower edge of phyllode decurrent with branchlet nerve)"	448
447	"Phyllodes not continuous with branchlets; pulvinus present or absent"	468
448	"Flowers 4-merous (W.A.)"	449
448	"Flowers 5-merous"	452
449	"Petals flabellate-striate (best observed in unopened flowers at ×10 mag.); pods quadrangular by prominently winged margins; branchlets and phyllodes sometimes muricate"	450
449	"Petals nerveless or 1-nerved; pods not quadrangular; branchlets and phyllodes not muricate"	451
450	"Phyllodes scarcely pungent, apices straight (rarely subuncinate), pentagonal-terete to almost flat; pods 4–5 mm wide"	"Acacia aemula"
450	"Phyllodes sharply pungent (with needle-like points that readily pierce the skin upon touch) and/or obviously uncinate, flat; pods 5–10 mm wide"	"Acacia stenoptera"
451	"Phyllodes tortuous, c. 0.5 mm wide; heads on glabrous peduncles 6–13 mm long"	"Acacia kerryana"
451	"Phyllodes erect, arcuate to circinnate, 0.8–3 mm wide; heads sessile"	"Acacia lirellata"
452	"Phyllodes rudimentary, to 10 mm long"	453
452	"Phyllodes some or all > 10 mm long"	455
453	"Phyllodes not pungent; petals flabellate-striate; heads 10–15-flowered; branches obviously tortuous (W.A.)"	"Acacia volubilis"
453	"Phyllodes sharply pungent with needle-like points that readily pierce the skin upon touch; petals not striate; heads 15–30-flowered"	454
454	"Branches green; bracteoles evident in mature buds; pods constricted between seeds (S.A., N.S.W.)"	"Acacia continua"
454	"Branches glaucous to subglaucous; bracteoles inconspicuous, not evident in buds; pods straight-edged or slightly constricted between seeds (W.A.)"	"Acacia daviesioides"
455	"Branchlets and/or flowering peduncles hairy (best observed at ×10 mag.) (W.A.)"	456
455	"Branchlets and/or flowering peduncles glabrous"	460
456	"Heads sessile; calyx entire but deeply cleft adaxially, dark brown, fimbriolate; pods tightly coiled or twisted; phyllodes 1–3 mm wide"	"Acacia unifissilis"
456	"Heads on peduncles 2–20 mm long; calyx 5-lobed; pods not coiled or twisted; phyllodes 0.7–2 mm wide"	457
457	"Phyllodes 1.5–6 cm long"	458
457	"Phyllodes > 6 cm long"	459
458	"Calyx lobes and bracteoles obviously acuminate; phyllodes often uncinate; branchlets not pruinose"	"Acacia ataxiphylla"
458	"Calyx lobes and bracteoles not acuminate; phyllodes not uncinate; branchlets variably pruinose"	"Acacia laricina"
459	"Phyllodes innocuous, ±curved, 8-nerved; peduncles 3–10 mm long, often paired"	"Acacia wilsonii"
459	"Phyllodes sharply pungent with needle-like points that readily pierce the skin upon touch, rigid, with numerous nerves, those on the 4 angles of the phyllode slightly broader than the rest; peduncles 2–3 mm long, up to 4 at each node"	"Acacia aciphylla"
460	"Phyllodes 6–40 cm long"	461
460	"Phyllodes to 6 cm long, pentagonal or ±terete; pods < 10 mm wide; shrubs to 2 m high"	463
461	"Phyllodes innocuous, sparse, 6–24 cm long, 5-nerved; peduncles 3–8 mm long, pods 3–4 mm wide; spindly shrubs to 3 m high (W.A.)"	"Acacia extensa"
461	"Phyllodes sharply pungent with needle-like points that readily pierce the skin upon touch"	462
462	"Phyllodes 8–12 cm long, sometimes 40 cm, quadrangular with a nerve at the apex of each angle; peduncles 12–15 mm long, solitary in axils; pods 30–50 mm wide, papery; trees (N.T., Qld)"	"Acacia peuce"
462	"Phyllodes 6–12 cm long, rigid, with numerous nerves, those on the four angles of the phyllode slightly broader than the rest; peduncles 2–3 mm long, up to 4 at each node; pods 2.5 mm wide; dense shrubs (W.A.)"	"Acacia aciphylla"
463	"Phyllodes 8-nerved (W.A.)"	464
463	"Phyllodes 5- or 7-nerved"	465
464	"Phyllodes 2–3 (–5) cm long, straight or shallowly recurved, sometimes strongly reflexed, other characters not combined as above"	"Acacia chapmanii"
464	"Phyllodes mostly 1–2 cm long, strongly recurved; stipules ±spinose (sharply or coarsely pungent); pods 4–7.5 mm wide"	"Acacia campylophylla"
465	"Bracteoles dark brown and clearly evident between flowers in mature buds; phyllodes 1–4 cm long"	466
465	"Bracteoles not evident between flowers in mature buds (W.A.)"	467
466	"Phyllodes strongly recurved, with prominent, raised nerves; stipules persistent, 1–1.5 mm long; peduncles 8–12 mm long; pods curved to 1-coiled, constricted between seeds (S.A., N.S.W.)"	"Acacia continua"
466	"Phyllodes straight to shallowly recurved, with rather obscure nerves; stipules caducous; peduncles 2–6 mm long; pods straight, not constricted between seeds (W.A.)"	"Acacia daviesioides"
467	"Phyllodes 3–6 cm long; heads 10–13-flowered; peduncles 7–15 mm long; pods to 2.5 cm long"	"Acacia hystrix"
467	"Phyllodes to 2 cm long; heads 15–24-flowered; peduncles 3–8 mm long; pods to 8 cm long"	"Acacia daviesioides"
468	"Phyllodes sharply pungent by needle-like points that readily pierce the skin upon touch"	469
468	"Phyllodes innocuous (but commonly with a slender mucro or narrowed to hard, rigid points which do not readily pierce the skin upon touch)"	546
469	"Phyllodes with 0–7 longitudinal nerves in all (the nerves sometimes obscure, observe carefully at ×10 mag.)"	470
469	"Phyllodes with 8 or more longitudinal nerves in all (nerves sometimes obscure, observe carefully at ×10 mag.)"	524
470	"Stipules spinose or subspinose (sometimes minute)"	471
470	"Stipules scarious and/or absent"	479
471	"Phyllodes 4–10 mm long AND ±nerveless; branchlets hairy; peduncles 7–14 mm long (SW W.A.)"	"Acacia pritzeliana"
471	"Phyllodes > 10 mm long OR if not then other characters not combined as above"	472
472	"Sepals united for at least 1/4 their length; phyllodes 20–45 mm long, pentagonal-terete and 5-nerved (SW W.A.)"	473
472	"Sepals free"	474
473	"Phyllodes glaucous; branchlets ±ribless, reddish aging to light grey"	"Acacia calcarata"
473	"Phyllodes green; branchlets ribbed, green"	"Acacia inamabilis"
474	"Phyllodes 4–10 mm long; peduncles 1.5–3 mm long, glabrous (SW W.A.)"	"Acacia concolorans"
474	"Phyllodes or peduncles longer than above"	475
475	"Stipules prominent, (3–) 5–12 mm long, rigid and widely spreading; phyllodes 20–65 mm long, terete, obscurely 4-nerved; peduncles 15–25 mm long (N.T., S.A.)"	"Acacia pickardii"
475	"Characters not combined as above"	476
476	"Phyllodes slender (0.7–1.5 mm wide), erect, normally terete, obscurely 4-nerved; branchlets finely ribbed, variably pruinose (SW W.A.)"	"Acacia teretifolia"
476	"Characters not combined as above"	477
477	"Phyllodes 6-nerved (S.A.)"	"Acacia hexaneura"
477	"Phyllodes 4- or 5-nerved (SW W.A.)"	478
478	"Branchlets prominently ribbed, glabrous; heads 15–25-flowered"	"Acacia baxteri"
478	"Branchlets finely ribbed or ribless; hairy or glabrous; heads 30–50-flowered"	"Acacia auronitens"
479	"Phyllodes very few and scattered; branchlets divaricate and somewhat spinose, striate-ribbed, glabrous, green (W.A., N.T.)"	"Acacia wiseana"
479	"Phyllodes numerous and evident; branchlets not as above"	480
480	"Phyllodes fasciculate in groups of normally 2–6 on nodose, dwarf, lateral branchlets (single on new shoots); peduncles 10–30 mm long; funicle bright yellow and encircling seed (arid zone: W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia tetragonophylla"
480	"Phyllodes not fasciculate OR if so then other characters not combined as above"	481
481	"Phyllodes all < 3 cm long"	482
481	"Phyllodes some or all > 3 cm long"	512
482	"Phyllodes 0–4-nerved in all"	483
482	"Phyllodes 5- or 7-nerved in all (W.A.)"	503
483	"Flowers 3- or 4-merous"	484
483	"Flowers 5-merous"	487
484	"Heads 2–6-flowered; peduncles 1.5–2 mm long (Tas.)"	"Acacia axillaris"
484	"Heads 12–25-flowered; peduncles 5–30 mm long"	485
485	"Branchlets glabrous, prominently ribbed; phyllodes 10 mm or more long, sessile (S.A., N.S.W., A.C.T., Vic., Tas.)"	"Acacia genistifolia"
485	"Branchlets hairy or glabrous, ribless or obscurely ribbed; phyllodes 5–20 mm long, with a very short, yet discernible pulvinus"	486
486	"Phyllodes terete to quadrangular, obscurely 4-nerved; peduncles 5–13 mm long (N.S.W., Vic.)"	"Acacia aculeatissima"
486	"Phyllodes trigonous-terete, normally 3-nerved, deeply channelled on either side of abaxial nerve; peduncles 5 mm long (SW W.A.)"	"Acacia argutifolia"
487	"Inflorescences 1–3-headed racemes; raceme axes 1–3 mm long, enclosed when young by large, conspicuous, brown bracts, scars observable at base of raceme axis (×10 mag.) after bracts have fallen (SW W.A.)"	488
487	"Inflorescences simple OR if racemose then raceme axis < 1 mm long and its base ebracteate or with minute bracts"	490
488	"Heads more than 10-flowered, golden; petals with sparse brown to black hairs"	"Acacia nigripilosa"
488	"Heads less than 10-flowered, cream-coloured; petals glabrous"	489
489	"Phyllodes quadrangular with a nerve at apex of each angle, not (or scarcely) dilated at base"	"Acacia castanostegia"
489	"Phyllodes terete, nerveless, prominently dilated at base"	"Acacia pachypoda"
490	"Phyllodes slightly but noticeably widened at base"	491
490	"Phyllodes not widened at base"	494
491	"Phyllodes ±nerveless, terete to compressed, 4–10 mm long; peduncles 7–14 mm long (SW W.A.)"	"Acacia pritzeliana"
491	"Phyllodes flat with a prominent midrib or (when very narrow) quadrangular (eastern Aust.)"	492
492	"Peduncles 7–15 mm long; heads creamy yellow (Qld, N.S.W., A.C.T., Vic., Tas.)"	"Acacia ulicifolia"
492	"Peduncles 1.4–4 mm long"	493
493	"Heads 10–18-flowered, lemon yellow, bracteoles not exserted in buds; pods 1–3-seeded (Qld)"	"Acacia neobrachycarpa"
493	"Heads 20–30-flowered, golden, bracteoles often slightly exserted in buds; pods more than 3-seeded (N.S.W.)"	"Acacia asparagoides"
494	"Phyllodes 4–10 mm long, ±nerveless, thick, terete to compressed; peduncles 7–14 mm long; branchlets hairy (SW W.A.)"	"Acacia pritzeliana"
494	"Phyllodes > 10 mm long OR if not then other characters not combined as above"	495
495	"Heads ±sessile; branchlets minutely woolly (SW W.A.)"	"Acacia sessilis"
495	"Heads clearly pedunculate (peduncles 4–30 mm long)"	496
496	"Phyllodes quadrangular, deeply grooved between the 4 prominent nerves; branchlets glabrous; stipules c. 1 mm long; heads 15–30-flowered; pods ±woody (SW W.A.)"	"Acacia quadrisulcata"
496	"Characters not combined as above"	497
497	"Bracteoles acuminate by a distinct, fine, tip (eastern Aust., except A. auronitens)"	498
497	"Bracteoles obtuse or absent; sepals free"	501
498	"Pods ±woody; funicle arillate; stipules 2–4 mm long, rigid and ±spinose (sharply or coarsely pungent); phyllodes 1–4 mm wide, normally flat (SW W.A.)"	"Acacia auronitens"
498	"Pods not woody; funicle exarillate; stipules 0.5–2 mm long, scarious or setaceous, sometimes deciduous; phyllodes 0.5–1.5 mm wide (not SW W.A.)"	499
499	"Heads cream or pale lemon yellow; phyllodes 20 mm or more long, often erect (Qld, N.S.W.)"	"Acacia quadrilateralis"
499	"Heads golden; phyllodes 5–25 mm long, ±patent"	500
500	"Bracteoles short-acuminate, not or scarcely exserted beyond flowers in buds; peduncles slender (Qld, N.S.W., Vic.)"	"Acacia brownii"
500	"Bracteoles long-acuminate, exserted beyond flowers in bud; peduncles stout (N.S.W.)"	"Acacia echinula"
501	"Heads 14–23-flowered; sepals united; phyllodes 6–20 mm long; stipules caducous (SW W.A.)"	"Acacia acuaria"
501	"Heads more than 30-flowered; sepals free; stipules persistent, 1–3 mm long"	502
502	"Phyllodes 3–25 mm long; branchlets lenticellular; stipules to 1.5 mm long, enveloped in resin (arid zone: W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia maitlandii"
502	"Phyllodes 20 mm or more long; branchlets not lenticellular; stipules 1.5–3 mm long, not enveloped in resin (SW W.A.)"	"Acacia pachyphylla"
503	"Heads obloid; bracteoles conspicuously overtopping flowers in mature buds; phyllode nerves somewhat obscured by surface wrinkling"	"Acacia pharangites"
503	"Heads globular; bracteoles not as above"	504
504	"Phyllodes 6- or 7-nerved in all"	505
504	"Phyllodes 5-nerved in all"	507
505	"Branchlets densely hairy; phyllodes patent to reflexed"	"Acacia declinata"
505	"Branchlets glabrous; phyllodes ascending to erect"	506
506	"Peduncles 2–7 mm long; phyllodes with protracted, very pungent points"	"Acacia tetanophylla"
506	"Peduncles 8–15 mm long; phyllodes abruptly contracted to short, subpungent points"	"Acacia sulcata"
507	"Petals striate; sepals c. 1/2-united; pods ±terete, red-brown, striate"	"Acacia barbinervis"
507	"Petals not striate (1-nerved or nerveless); pods not as above"	508
508	"Sepals c. 2/3-united; phyllodes strongly deflexed AND sessile"	"Acacia retrorsa"
508	"Sepals free or absent; phyllodes patent to erect OR if deflexed then clearly pulvinate"	509
509	"Phyllodes with a short yet distinct, terete pulvinus; heads ±sessile; branchlets minutely woolly at least when young"	"Acacia sessilis"
509	"Phyllodes sessile OR if not then peduncles > 3 mm long"	510
510	"Phyllodes erect, 20–45 mm long, glaucous to subglaucous"	"Acacia hystrix"
510	"Phyllodes ±patent, 6–25 mm long, green or subglaucous"	511
511	"Sepals absent; peduncles 2 mm long; phyllodes 5-nerved for their entire length"	"Acacia asepala"
511	"Sepals present; peduncles 3–13 mm long; phyllodes 5-nerved but adaxial 2 coalescing at gland 2–8 mm above base"	"Acacia sphacelata"
512	"Phyllodes 8–40 cm long, quadrangular in section; branchlets glabrous; pods 3–5 cm wide (arid zone, Qld, N.T.)"	"Acacia peuce"
512	"Characters not combined as above"	513
513	"Flowers 3- or 4-merous"	514
513	"Flowers 5-merous"	516
514	"Heads 2–6-flowered; peduncles 1.5–2 mm long (Tas.)"	"Acacia axillaris"
514	"Heads 10–25-flowered; peduncles 5–30 mm long"	515
515	"Phyllodes sessile, quadrangular (nerve obvious at apex of each angle), sharply pungent; sepals united (S.A., N.S.W., A.C.T., Vic., Tas.)"	"Acacia genistifolia"
515	"Phyllodes pulvinate, terete to flat, with numerous, fine, indistinct nerves, scarcely pungent; sepals free (SW W.A.)"	"Acacia inceana"
516	"Inflorescences racemose, with raceme axis 1–15 mm long and enclosed when young by brown bracts, their scars observable (×10 mag.) at base of raceme axis after bracts have fallen"	517
516	"Inflorescences simple OR if racemose then raceme axis less then 1 mm long"	518
517	"Racemes 3–7-headed; branchlets angled at extremities by fine yellow ribs; petals glabrous; funicle exarillate (W.A., N.T., S.A.)"	"Acacia prainii"
517	"Racemes 1- or 2-headed; branchlets ash grey and scarcely ribbed; petals with sparse brown to black appressed hairs; funicle arillate (SW W.A.)"	"Acacia nigripilosa"
518	"Branchlets densely hairy at least towards their apices (the hairs sometimes immersed in resin); sepals united; pods 7–12 mm wide; phyllodes thick and rigid"	519
518	"Branchlets glabrous OR if not (rare) then other characters not combined as above; pods 2–8 mm wide"	520
519	"Phyllodes quadrangular, 3–7.5 cm long (S.A., N.S.W.)"	"Acacia carneorum"
519	"Phyllodes terete, 6–14 cm long (W.A.)"	"Acacia donaldsonii"
520	"Heads obloid; bracteoles conspicuously overtopping flowers in mature buds; phyllodes obscurely 7-nerved (SW W.A.)"	"Acacia pharangites"
520	"Heads globular; bracteoles not as above"	521
521	"Stipules persistent, 1.5–3 mm long; peduncles 12–30 mm long; heads 36–53-flowered (SW W.A.)"	"Acacia pachyphylla"
521	"Stipules caduous or inconspicuous (< 1.5 mm long); peduncles 2–12 mm long; heads 10–30-flowered"	522
522	"Phyllodes 4-nerved, slender, erect (Qld, N.S.W.)"	"Acacia quadrilateralis"
522	"Phyllodes 5- or 7-nerved (SW W.A.)"	523
523	"Phyllodes 5-nerved"	"Acacia hystrix"
523	"Phyllodes 7-nerved"	"Acacia tetanophylla"
524	"Phyllodes 8-nerved"	525
524	"Phyllodes more than 8-nerved"	532
525	"Phyllodes 6–14.5 cm long (W.A.)"	526
525	"Phyllodes < 6 cm long"	527
526	"Branchlets glabrous; phyllodes prominently nerved"	"Acacia speckii"
526	"Branchlets hairy (indumentum often immersed in resin); phyllodes obscurely nerved"	"Acacia donaldsonii"
527	"Branchlets densely hairy (hairs straight, patent to reflexed but not appressed); phyllodes patent to reflexed, strongly nerved (SW W.A.)"	"Acacia declinata"
527	"Branchlets glabrous or appressed-hairy"	528
528	"Phyllodes pulvinate (pulvinus distinct yet short, c. 1 mm long); heads globular, 9–18-flowered; pods ±woody (SW W.A.)"	"Acacia cavealis"
528	"Phyllodes sessile OR if pulvinate then heads clearly obloid; pods not woody"	529
529	"Stipules persistent, sometimes ±spinose (sharply or coarsely pungent); heads globular (SW W.A.)"	530
529	"Stipules caducous, not spinose; heads globular or obloid"	531
530	"Phyllodes straight, patent to strongly reflexed, 2–3 (–5) cm long"	"Acacia chapmanii"
530	"Phyllodes strongly recurved, 10–20 mm long"	"Acacia campylophylla"
531	"Heads subglobular, 2 in each axil; aril orange or yellow (W.A., S.A., N.S.W., Vic.)"	"Acacia colletioides"
531	"Heads clearly obloid, 1 in each axil; seed aril cream (W.A.)"	"Acacia subsessilis"
532	"Phyllodes perfectly terete, (7–) 10–25 (–30) mm long; stipules persistent, black; branchlets hairy (W.A.)"	"Acacia mackeyana"
532	"Characters not combined as above"	533
533	"Peduncles 0–2 mm long"	534
533	"Peduncles some or all > 2 mm long"	537
534	"Heads pale yellow, 5–15-flowered; pods 6–10 mm wide; aril large and yellow-orange (W.A., N.T., S.A., Qld, N.S.W., Vic.)"	"Acacia oswaldii"
534	"Heads golden; pods 2.5–4.5 mm wide; aril small and whitish (W.A.)"	535
535	"Heads 30–45-flowered; phyllodes without evident stomata; sepals 1/4–2/3-united"	"Acacia masliniana"
535	"Heads 11–25-flowered; phyllodes with rows of stomata evident between nerves"	536
536	"Sepals free; pods glabrous"	"Acacia kalgoorliensis"
536	"Sepals 1/2–3/4-united; pods tomentulose"	"Acacia densiflora"
537	"Phyllodes ±sessile, glabrous, not more than 5 cm long"	538
537	"Phyllode characters not combined as above"	540
538	"Phyllodes and branchlets asperulate; pods plicate (S.A., Vic.)"	"Acacia enterocarpa"
538	"Phyllodes and branchlets smooth"	539
539	"Phyllode nerves ±obscure, not raised; pods arcuate to coiled; aril large, yellow or orange (W.A., N.T., S.A., N.S.W., Vic.)"	"Acacia nyssophylla"
539	"Phyllode nerves prominent, raised when dry; pods undulate; aril small and white (SW W.A.)"	"Acacia acellerata"
540	"Phyllodes with rows of stomata evident between nerves; branchlets densely hairy with indumentum extending to pulvinus (W.A.)"	541
540	"Phyllodes without evident stomata; nerves often indistinct"	542
541	"Phyllodes 2–4 cm long, rather abruptly contracted to pungent tip"	"Acacia dissona"
541	"Phyllodes 3–7 cm long, gradually tapered to long, spinose tip"	"Acacia kalgoorliensis"
542	"Branchlets glabrous; phyllodes glabrous, very brittle and snapping easily and cleanly; flowers 4-merous (S.A., N.S.W., Vic.)"	"Acacia havilandiorum"
542	"Characters not combined as above"	543
543	"Phyllodes protracted into long, subulate, straight, very sharply pungent points (W.A.)"	544
543	"Phyllode tips not as above"	545
544	"Peduncles 0.5–3 mm long"	"Acacia masliniana"
544	"Peduncles 6–15 mm long"	"Acacia roycei"
545	"Flowers 4-merous (SW W.A.)"	"Acacia inceana"
545	"Flowers 5-merous (SW W.A., S.A., Qld, N.S.W., Vic.)"	"Acacia rigens"
546	"Bipinnate leaves persisting with phyllodes on mature plants (SW W.A.)"	547
546	"Bipinnate leaves absent from mature plants"	548
547	"Heads 4–8-flowered, yellow to dark yellow (N.S.W.)"	"Acacia meiantha"
547	"Heads 12–19-flowered, cream to golden (SW W.A.)"	"Acacia insolita"
548	"Phyllodes very few and scattered AND/OR branchlets ending in spinose or hard rigid points"	549
548	"Phyllodes numerous AND branchlets not as above"	561
549	"Petals striate (observe at ×10 mag.) (SW W.A.)"	550
549	"Petals nerveless or 1-nerved"	551
550	"Phyllodes 1–11 cm long; stems ±straight; flowers 4-merous; peduncles 5–15 mm long"	"Acacia aemula"
550	"Phyllodes < 1 cm long; stems tortuous; flowers 5-merous; peduncles 3 mm long"	"Acacia volubilis"
551	"Phyllodes > 4 cm long (W.A.)"	552
551	"Phyllodes < 4 cm long"	554
552	"Phyllodes terete, thick & rigid, very obscurely 4-nerved, resembling the branchlets (arid W.A.)"	"Acacia wilcoxii"
552	"Phyllodes not as above (temperate W.A.)"	553
553	"Peduncles hairy; small shrub 0.4–0.7 m high"	"Acacia insolita"
553	"Peduncles glabrous; tall shrub to 3 m high"	"Acacia extensa"
554	"Phyllodes fasciculate, 7–13 × 0.5–1.5 mm; stipules ±spinose (sharply or coarsely pungent) (SW W.A.)"	"Acacia nodiflora"
554	"Characters not combined as above"	555
555	"Inflorescences racemose, with racemes 1–6 cm long and enclosed when young by conspicuous brown bracts; phyllodes rarely present; branchlets not spinose (SW W.A.)"	"Acacia restiacea"
555	"Inflorescences simple or if racemose then < 10 mm long and not enclosed by bracts; branchlets coarsely to sharply spinose"	556
556	"Branchlets finely striate, ash grey, ascending to erect, rather straight and sparingly divided; heads 28–35-flowered; pods submoniliform, to 15 cm long (W.A.)"	"Acacia exocarpoides"
556	"Characters not combined as above"	557
557	"Branchlets obviously striate-ribbed (×10 mag.); phyllodes 5–20 (–40) mm long; shrubs normally erect; pods straight to curved"	558
557	"Branchlets obscurely ribbed to ribless; phyllodes 3–11 mm long; shrubs often prostrate"	559
558	"Branchlets green; sepals free (arid W.A., N.T.)"	"Acacia wiseana"
558	"Branchlets pruinose; sepals united (SW W.A.)"	"Acacia ulicina"
559	"Sepals free; pods not coiled; phyllodes mostly reflexed (SW W.A.)"	"Acacia diminuta"
559	"Sepals united; pods twisted to somewhat tightly and irregularly coiled; phyllodes mostly patent to erect"	560
560	"Heads 15–30-flowered; erect shrubs (W.A., S.A., N.S.W., Vic.)"	"Acacia acanthoclada"
560	"Heads 6–7-flowered; prostrate shrubs (SW W.A.)"	"Acacia pulviniformis"
561	"Inflorescences all or mostly racemose with raceme axes 3 mm or more long"	562
561	"Inflorescences simple on axillary peduncles (rarely interspersed with a few racemes) OR if all racemose then raceme axes < 3 mm long"	587
562	"Phyllodes 0–4-nerved"	563
562	"Phyllodes 5-nerved or more"	583
563	"Resinous and often viscid shrub; phyllodes ±terete, 2–5 (–9) cm long, innocuous with normally obliquely truncate apices, and nerves impressed and often obscure"	564
563	"Characters not combined as above"	565
564	"Gland at base of phyllode 0–2 mm above pulvinus; pods 2.5–3 mm wide (arid zone: W.A., N.T.)"	"Acacia abrupta"
564	"Gland absent from base of phyllode; pods 5 mm wide (SW W.A.)"	"Acacia ascendens"
565	"Sepals free or very shortly united at base"	566
565	"Sepals clearly united for 1/4 or more their length"	572
566	"Phyllodes 9–15 (–28) cm long, curved to sinuous, sessile, not easily separated from branchlets (SW W.A.)"	"Acacia graniticola"
566	"Phyllodes not as above"	567
567	"Racemes enclosed when young by brown bracts, their scars observable (×10 mag.) at base of raceme axes after bracts have fallen"	568
567	"Racemes not enclosed by bracts, and ebracteate at base of axes"	570
568	"Phyllodes terete, ±nerveless, sessile, innocuous (SW W.A.)"	"Acacia squamata"
568	"Phyllode characters not combined as above"	569
569	"Racemes 3–7-headed; branchlets angled at extremities by fine yellow ribs; petals glabrous; funicle exarillate (W.A., N.T., S.A.)"	"Acacia prainii"
569	"Racemes 1- or 2-headed; branchlets ash grey and scarcely ribbed; petals with sparse brown to black appressed hairs; funicle arillate (SW W.A.)"	"Acacia nigripilosa"
570	"Phyllodes short-acuminate with delicate, curved, eglandular points; pods 3–6 mm wide, coriaceous to crustaceous; funicle arillate, 1/2 or more encircling seed (S.A., N.S.W., Vic.)"	"Acacia calamifolia"
570	"Phyllode apices not as above; pods 7–11 mm wide, papery; funicle exarillate"	571
571	"Peduncles 4–7 mm long; phyllodes with the mucro curved over gland (W.A., N.T., S.A.)"	"Acacia pachyacra"
571	"Peduncles 10–20 mm long; phyllodes with a straight, erect mucro, apical gland normally absent (W.A.)"	"Acacia subrigida"
572	"Heads 4–20-flowered, sometimes cream-coloured; plants sometimes < 1 m high"	573
572	"Heads more than 20-flowered, never cream-coloured; plants 2–8 m high"	579
573	"Phyllodes 10–55 × 0.4–1 mm, with nerves very obscure or absent; heads 4–12-flowered; peduncles 2–5 mm (N.S.W.)"	574
573	"Characters not combined as above"	575
574	"Heads creamy yellow, 6–12-flowered; pods 7–13 mm wide"	"Acacia linifolia"
574	"Heads yellow to dark yellow, 4–8-flowered; pods 4–7 mm wide"	"Acacia meiantha"
575	"Bracteoles peltate, with circular laminae, and evident between flowers in mature buds; funicle encircling seed (N.S.W.)"	"Acacia subulata"
575	"Bracteoles not as above; funicle not encircling seed (W.A.)"	576
576	"Rush-like or prostrate plants < 1 m high"	577
576	"Erect shrubs or trees > 1 m high"	578
577	"Branchlets puberulous; peduncles 10–20 mm long; plants prostrate"	"Acacia maxwellii"
577	"Branchlets glabrous; peduncles 5–10 mm long; plants rush-like with erect or sprawling stems"	"Acacia flagelliformis"
578	"Receptacle as wide or wider than peduncles; heads golden; pods 10–20 mm wide, woody"	"Acacia sclerosperma"
578	"Receptacle obviously narrower than peduncle; heads cream; pods 4–5 mm wide, thinly coriaceous"	"Acacia crassiuscula"
579	"Phyllodes terete, thick & rigid, not wrinkled when dry, very obscurely nerved, resembling the branchlets (W.A.)"	"Acacia wilcoxii"
579	"Phyllodes not as above"	580
580	"Racemes enclosed when young by imbricate bracts (bract scars persistent at base of raceme axes), commonly growing out during anthesis; aril not encircling seed (SW W.A.)"	"Acacia scirpifolia"
580	"Racemes not enclosed by bracts; aril 1/2 or more encircling seed"	581
581	"Phyllodes 18–35 (–69) cm long; heads 50–70-flowered (S.A.)"	"Acacia araneosa"
581	"Phyllodes < 18 cm long AND/OR heads less then 50-flowered"	582
582	"Peduncles glabrous (S.A., N.S.W., Vic.)"	"Acacia calamifolia"
582	"Peduncles appressed-puberulous (W.A.)"	"Acacia chamaeleon"
583	"Phyllodes < 5 cm long, prominently 5-nerved, glabrous (along with branchlets and peduncles) (SW W.A.)"	"Acacia gonophylla"
583	"Phyllodes > 5 cm long"	584
584	"Peduncles and branchlets glabrous; phyllodes glabrous, 5- or 8-nerved"	585
584	"Peduncles and (at least when young) the branchlets and phyllodes appressed-hairy; phyllodes finely striate with more than 8 nerves (arid zone)"	586
585	"Phyllodes ±pentagonal, 5-nerved, green, commonly filiform and resembling the sometimes narrowly winged branchlets (SW W.A.)"	"Acacia extensa"
585	"Phyllodes terete, obscurely 8-nerved, ±glaucous, thick and rigid (arid zone: W.A., S.A.)"	"Acacia gilesiana"
586	"Sepals united; petals glabrous or white appressed-puberulous; phyllodes 12–22 cm long; bark corky; pods 7–12 mm wide; aril large and orange (W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia coriacea"
586	"Sepals free; petals golden appressed-puberulous; phyllodes 8–14.5 cm long; bark not corky; pods 5–5.5 mm wide; seed not seen (W.A.)"	"Acacia auripila"
587	"Phyllodes in clusters of 2–6 at mature nodes (often single on young shoots)"	588
587	"Phyllodes borne singly at nodes (occasionally interspersed with a few in clusters)"	592
588	"Stipules ±spinose (sharply or coarsely pungent); sepals free or almost so; pods 7–8 mm wide, crustaceous, with seeds longitudinally arranged (SW W.A.)"	"Acacia nodiflora"
588	"Stipules caducous or innocuous; calyx normally united; pods 3–6 mm wide, with seeds obliquely arranged (northern W.A. & N.T.)"	589
589	"Heads obloid to short cylindrical; phyllodes 4–25 mm long (N.T.)"	"Acacia abbreviata"
589	"Heads globular"	590
590	"Youngest branchlets terete and obscurely ribbed; phyllodes 20–30 mm long; bracteoles short-acute (W.A.)"	"Acacia manipularis"
590	"Youngest branchlets angled by prominent ribs; phyllodes normally < 20 mm long"	591
591	"Bracteoles short-acute to apiculate; phyllodes subterete to flat, mostly 4–14 × 0.5–0.8 mm (N.T.)"	"Acacia subternata"
591	"Bracteoles long-acuminate; phyllodes terete to subterete, 7–18 mm long, very slender (0.3–0.4 mm diam.) (W.A., N.T.)"	"Acacia delicatula"
592	"Phyllode nerves forming an obvious, regular net-like reticulum (SW W.A.)"	"Acacia lobulata"
592	"Phyllode nerves not forming a reticulum (nerves all parallel to long axis of phyllode or absent)"	593
593	"Pods woody; peduncles 15–40 mm long, glabrous; heads 30–45-flowered; sepals united; phyllodes curved upwards from near base (NW W.A.)"	"Acacia arrecta"
593	"Characters not combined as above (not NW W.A.)"	594
594	"Phyllodes not more than 2 cm long"	595
594	"Phyllodes some or all > 2 cm long"	634
595	"Phyllodes with 0–5 longitudinal nerves (nerves sometimes obscured by indumentum or surface wrinkling, observe carefully at ×10 mag.)"	596
595	"Phyllodes with 6 or more longitudinal nerves (nerves sometimes obscured by indumentum or surface wrinkling, observe carefully at ×10 mag.)"	623
596	"Sepals free or very shortly united at base"	597
596	"Sepals clearly united for 1/4 or more their length"	611
597	"Branchlets hairy to some degree (at least when young) (SW W.A.)"	598
597	"Branchlets completely glabrous"	603
598	"Stipules persistent, setaceous, 1.5–3 mm long; phyllodes 5–13 mm long, glabrous, ±nerveless, crowded"	"Acacia pusilla"
598	"Stipules caducous (sometimes obvious on new shoots) OR if not then phyllodes hairy"	599
599	"Phyllodes nerveless, fleshy, commonly finely longitudinally wrinkled when dry, slightly horizontally flattened with gland on upper surface of lamina; stipules (evident on new shoots) connate, c. 2 mm long"	600
599	"Phyllodes finely 4- or 5-nerved, other characters not as above"	601
600	"Phyllodes green, loosely villous at least when young, linear to narrowly oblong, 5–25 mm long; branchlets loosely villous to appressed-pilose with ±long, curved to subcrisped hairs"	"Acacia ericifolia"
600	"Phyllodes normally glaucous and glabrous; other characters not combined as above"	"Acacia leptospermoides"
601	"Phyllodes 5-nerved; pods ±shallowly curved; branchlet hairs commonly appressed"	"Acacia quinquenervia"
601	"Phyllodes 4-nerved; pods strongly curved to coiled; branchlet hairs commonly patent"	602
602	"Phyllode nerves not or scarcely raised; heads 20–32-flowered; seeds mottled"	"Acacia lachnophylla"
602	"Phyllode nerves prominently raised; heads 16–21-flowered; seeds not mottled"	"Acacia poliochroa"
603	"Plants resinous"	604
603	"Plants not resinous"	605
604	"Stipules persistent, 2.5–4.5 mm long; heads 65–75-flowered; peduncles 20–30 mm long; pods asperulate, 7–11 mm wide (SW W.A.)"	"Acacia rossei"
604	"Stipules caducous; heads 20–30-flowered; peduncles 5–15 mm long; pods smooth, c. 4 mm wide (arid zone: W.A., N.T., S.A.)"	"Acacia helmsiana"
605	"Phyllodes fleshy, coarsely wrinkled when dry, pale green, very obscurely nerved, 10–45 mm long; inflorescences mostly simple; heads 18–20-flowered (S.A.)"	"Acacia pinguifolia"
605	"Characters not combined as above (SW W.A.)"	606
606	"Phyllodes obviously 5-nerved"	"Acacia quinquenervia"
606	"Phyllodes nerveless or obscurely 3-nerved"	607
607	"Heads 20–35-flowered; stipules (evident on new shoots) connate, c. 2 mm long; peduncles axillary (not in racemes), ebracteate at base; phyllodes glaucous"	"Acacia leptospermoides"
607	"Heads 6–20-flowered; stipules not as above; bract (small or large) present at base of peduncles"	608
608	"Peduncles 6–15 mm long, twinned on a short, but distinct raceme axis 0.5–2 mm long; phyllodes green, 8–17 mm long"	"Acacia binata"
608	"Peduncles axillary or on a rudimentary raceme not more than 0.5 mm long; phyllodes commonly glaucous"	609
609	"Basal peduncular bract ovate, insignificant, c. 0.5 mm long; heads 6–8-flowered; phyllodes 7–12 mm long"	"Acacia binata"
609	"Basal peduncular bract rostriform, 1.5–2.5 mm long"	610
610	"Heads 13–15-flowered; phyllodes 8–15 mm long, apiculate"	"Acacia diaphyllodinea"
610	"Heads 7–10-flowered; phyllodes 4–10 mm long, obtuse"	"Acacia crassuloides"
611	"Branchlets pubescent; phyllodes 4–8 mm long, uncinate to subuncinate with a distinct, slender mucro; stipules setaceous to linear-triangular, 1–2 mm long (SW W.A.)"	"Acacia vassalii"
611	"Characters not combined as above"	612
612	"Inflorescences very short racemes OR if simple then peduncles with an often small, persistent basal bract"	613
612	"Inflorescences simple, peduncles ebracteate at base"	616
613	"Phyllodes ±trigonous in section (when dry) with midrib on lower surface prominently raised; inflorescences simple; peduncles glabrous (SW W.A.)"	"Acacia prismifolia"
613	"Phyllodes terete to subterete, nerves normally not raised; inflorescences normally very short, 1- or 2-headed racemes; peduncles often yellow-hairy"	614
614	"Peduncles with dense, spreading hairs; bracteoles acuminate; pods 4–5 mm wide, pilose (SW W.A.)"	"Acacia leptalea"
614	"Peduncles with sparse or dense, appressed hairs; bracteoles not acuminate; pods 2–3 mm wide"	615
615	"Peduncles densely hairy; branchlets commonly with prominent yellow ribs at extremities (S.A., N.S.W., Vic.)"	"Acacia wilhelmiana"
615	"Peduncles ±sparsely hairy; branchlets not obviously ribbed (SW W.A.)"	"Acacia viscifolia"
616	"Phyllodes obtuse, glaucous at least when young (SW W.A.)"	"Acacia leptospermoides"
616	"Phyllodes acute to acuminate or distinctly and excentrically mucronulate, not glaucous"	617
617	"Phyllodes 1.5 mm or more long, sessile; branchlets coated with a thick layer of resin (SW W.A.)"	"Acacia sedifolia"
617	"Phyllodes and branchlets not as above (not SW W.A.)"	618
618	"Peduncles densely puberulous; phyllodes 10–15 mm long, finely puberulous, recurved at apices (N.S.W.)"	"Acacia gordonii"
618	"Peduncles glabrous to subglabrous OR if densely puberulous then phyllodes not as above"	619
619	"Peduncles 2–3 mm long; phyllodes tuberculate; branchlets puberulous (N.S.W.)"	"Acacia baueri"
619	"Peduncles 5–11 mm long"	620
620	"Phyllodes and peduncles asperulous-tuberculate by minute glandular hairs; pods with prominent, raised excrescences (Qld)"	"Acacia handonis"
620	"Phyllodes, peduncles and pods not as above"	621
621	"Pods 7–15 mm wide; phyllodes 2.5–12 mm long, with mucro or the whole apex frequently slightly up-turned (Qld, N.S.W.)"	"Acacia brunioides"
621	"Pods 3–4 mm wide; phyllodes 10 mm or more long, recurved-uncinate or the distinct mucro clearly abaxially excentric"	622
622	"Branchlets glabrous; phyllodes terete to subterete, very slender, rather widely spreading (Qld)"	"Acacia islana"
622	"Branchlets sparsely to moderately hairy; phyllodes subterete to ±triquetrous with lower margin broader than upper, if terete then clearly erect (Qld, N.S.W.)"	"Acacia burbidgeae"
623	"Heads obloid; bracteoles conspicuously overtopping flowers in mature buds; phyllodes ±glaucous (W.A.)"	"Acacia pharangites"
623	"Heads globular"	624
624	"Phyllodes ±fleshy, rounded-obtuse, 12–20 × 1–2 mm, glabrous; sepals united; heads 10–17-flowered, with buds apiculate to subacute; peduncles 5–13 mm long, glabrous; pods thickly crustaceous (SW W.A.)"	"Acacia pinguiculosa"
624	"Characters not combined as above"	625
625	"Phyllodes 6–8-nerved"	626
625	"Phyllodes more than 8-nerved"	631
626	"Phyllodes 15 mm or more long, with 6, brownish, resinous nerves, and apex obliquely rounded-truncate with an excentric blunt point; peduncles glabrous (S.A.)"	"Acacia menzelii"
626	"Phyllode and peduncle characters not combined as above (SW W.A.)"	627
627	"Shrubs viscid; peduncles often golden-hairy; phyllodes commonly curved upwards; nerves obscure and not raised"	"Acacia viscifolia"
627	"Shrubs not viscid; peduncles glabrous or white-hairy; phyllode nerves commonly raised"	628
628	"Stipules persistent; phyllode nerves strongly raised (when dry)"	629
628	"Stipules caducous; phyllode nerves raised or not"	630
629	"Branchlets glabrous; phyllodes 10–20 mm long, glabrous"	"Acacia octonervia"
629	"Branchlets densely hairy; phyllodes 3–12 mm long, normally hairy on nerves"	"Acacia brachyphylla"
630	"Phyllodes 6- or 7-nerved; heads 10–15-flowered"	"Acacia sulcata"
630	"Phyllodes 8-nerved, ±gradually narrowed to delicate, curved, acute to short-acuminate tips; heads 16–30-flowered"	"Acacia uncinella"
631	"Phyllodes fleshy, coarsely wrinkled when dry, with nerves very obscure; peduncles mostly 4–10 mm long (S.A.)"	"Acacia pinguifolia"
631	"Phyllodes not fleshy, striate by fine nerves (W.A.)"	632
632	"Heads sessile; phyllodes normally thick and shallowly to strongly curved"	"Acacia obesa"
632	"Heads pedunculate; phyllodes slender and commonly straight"	633
633	"Branchlets resinous; pods undulate, not constricted between seeds; seeds arillate"	"Acacia nivea"
633	"Branchlets not resinous; pods not undulate, breaking readily at narrow constrictions between seeds; seeds exarillate"	"Acacia dielsii"
634	"Flowers 4-merous"	635
634	"Flowers 5-merous (occasionally a few 4-merous flowers intermixed, or, in A. squamata, petals absent)"	647
635	"Heads pedunculate (peduncles 3–15 mm long)"	636
635	"Heads sessile"	638
636	"Shrubs viscid; peduncles 8–15 mm long; phyllodes innocuous, with ±uncinate tips (S.A.)"	"Acacia barattensis"
636	"Shrubs not viscid; peduncles 3–8 mm long; phyllodes innocuous or pungent"	637
637	"Branchlets glabrous; phyllodes finely striate, very brittle and snapping easily and cleanly, with tips often straight and ±pungent (S.A., N.S.W., Vic.)"	"Acacia havilandiorum"
637	"Characters not combined as above (SW W.A.)"	"Acacia inceana"
638	"Phyllodes quadrangular with a narrow nerve at apex of each angle (N.S.W., Vic.)"	"Acacia phasmoides"
638	"Phyllodes terete to subterete OR if quadrangular then with a broad nerve at apex of each angle (SW W.A.)"	639
639	"Phyllodes 2–7 cm long, deeply furrowed between nerves; bracteoles acuminate, dark brown to blackish"	640
639	"Phyllode and bracteole characters not combined as above"	641
640	"Phyllodes 8-nerved, rhombic-compressed"	"Acacia lirellata"
640	"Phyllodes 4-nerved, terete"	"Acacia tetraneura"
641	"Phyllodes striate by more than 8 fine nerves; upper branchlets glabrous, ±ribless, light grey"	"Acacia multispicata"
641	"Phyllodes with 4 or 8 broad nerves; upper branchlets hoary between fine, resinous ribs, normally red-brown"	642
642	"Phyllodes terete, with 8 uniformly wide nerves"	643
642	"Phyllodes ±quadrangular with the nerve at each angle broader and/or slightly raised above those on the intervening faces"	645
643	"Phyllodes 6–14 cm long, thick, clearly curved"	"Acacia aprica"
643	"Phyllodes 2.5–6 cm long"	644
644	"Phyllodes clearly incurved (sometimes into a circle)"	"Acacia arcuatilis"
644	"Phyllodes straight to very shallowly incurved, slender"	"Acacia cracentis"
645	"Branchlets pendulous and prominently flexuose; heads obloid to short cylindrical"	"Acacia merinthophora"
645	"Branchlets ascending to erect, straight to very shallowly flexuose"	646
646	"Phyllodes 8–25 cm long; heads obloid"	"Acacia filifolia"
646	"Phyllodes 2.5–10 cm long; heads globular"	"Acacia tratmaniana"
647	"Phyllodes with 0–5 longitudinal nerves (nerves sometimes obscured by indumentum or surface wrinkling, observe carefully at ×10 mag.)"	648
647	"Phyllodes with 6 or more longitudinal nerves (nerves sometimes obscured by indumentum or surface wrinkling, observe carefully at ×10 mag.)"	692
648	"Phyllodes not more than 5 cm long"	649
648	"Phyllodes some or all > 5 cm long"	676
649	"Sepals free or almost free"	650
649	"Sepals united for 1/4 or more their length"	666
650	"Inflorescences 1- or 2-headed racemes, enclosed when young by conspicuous, brown bracts, their scars observable at base of raceme axis (×10 mag.) after bracts have fallen; petals with sparse brown to black hairs (SW W.A.)"	"Acacia nigripilosa"
650	"Inflorescences simple OR if racemose then not enclosed by conspicuous bracts; petals glabrous or white-hairy"	651
651	"Branchlets hairy to some degree (at least when young) (SW W.A.)"	652
651	"Branchlets glabrous"	657
652	"Phyllodes 5-nerved"	653
652	"Phyllodes 4-nerved or nerveless"	654
653	"Branchlets densely hairy; inflorescences simple"	"Acacia quinquenervia"
653	"Branchlets sparsely hairy; inflorescences comprising minute racemes"	"Acacia mutabilis"
654	"Branchlets ash grey, ±ribless, with minute, closely appressed, straight hairs; phyllodes glabrous except pulvinus appressed-puberulous abaxially and slightly but discernibly flared at base"	"Acacia consanguinea"
654	"Branchlets and phyllodes not as above"	655
655	"Phyllodes nerveless, fleshy, wrinkled when dry; stipules (evident on new shoots) connate, c. 2 mm long"	"Acacia ericifolia"
655	"Phyllodes 4-nerved; stipules not as above"	656
656	"Phyllode nerves not or scarcely raised; heads 20–32-flowered; seeds mottled"	"Acacia lachnophylla"
656	"Phyllode nerves prominently raised; heads 16–21-flowered; seeds not mottled"	"Acacia poliochroa"
657	"Plants resinous (especially obvious on young growth)"	658
657	"Plants not obviously resinous"	661
658	"Stipules persistent, 2.5–4.5 mm long; phyllodes crowded, ±straight, obliquely mucronulate; heads 65–75-flowered; pods asperulate, 7–11 mm wide (SW W.A.)"	"Acacia rossei"
658	"Stipules caducous or c. 0.5 mm long; phyllodes commonly incurved to sigmoid and/or uncinate; heads 20–40-flowered; pods smooth, 4–5 mm wide"	659
659	"Phyllodes 5–20 mm long, 2-nerved (arid zone: W.A., N.T., S.A.)"	"Acacia helmsiana"
659	"Phyllodes 20–40 mm long, 4-nerved"	660
660	"Gland at base of phyllode 0–2 mm above pulvinus; pods 2.5–3 mm wide (arid zone: W.A., N.T.)"	"Acacia abrupta"
660	"Gland absent from base of phyllode; pods 5 mm wide (SW W.A.)"	"Acacia ascendens"
661	"Phyllodes 5-nerved (SW W.A.)"	662
661	"Phyllodes 4-nerved or nerveless"	663
662	"Heads cream to pale yellow; pulvinus absent or very reduced"	"Acacia gonophylla"
662	"Heads golden; pulvinus distinct"	"Acacia mutabilis"
663	"Phyllodes thick and fleshy, coarsely wrinkled when dry; pulvinus glabrous; inflorescences mostly simple; heads 18–20-flowered (S.A.)"	"Acacia pinguifolia"
663	"Characters not combined as above"	664
664	"Phyllodes abruptly narrowed to a short mucro, very slender; pulvinus 1.5–2 mm long, terete, glabrous; heads 10–15-flowered (SW W.A.)"	"Acacia ophiolithica"
664	"Phyllodes gradually narrowed to rather delicate, acute to short-acuminate, curved to uncinate points; heads normally more than 15-flowered"	665
665	"Pulvinus glabrous; inflorescences usually short racemes; funicle 1/2 or more encircling seed (S.A., N.S.W., Vic.)"	"Acacia calamifolia"
665	"Pulvinus appressed-puberulous abaxially; inflorescences simple; funicle not encircling seed (SW W.A.)"	"Acacia consanguinea"
666	"Prostrate shrubs; branchlets with short, ±spreading hairs; peduncles 10–20 mm long, glabrous (SW W.A.)"	"Acacia maxwellii"
666	"Erect shrubs; other characters not combined as above"	667
667	"Heads obloid; peduncles 7–11 mm long, densely white-hairy; young growth densely white-hairy (SW W.A.)"	"Acacia ashbyae"
667	"Heads globular; other characters not as above"	668
668	"Heads 6–11-flowered (SW W.A.)"	669
668	"Heads more than 11-flowered"	670
669	"Peduncles 7–11 mm long; inflorescences short racemes enclosed when young by conspicuous, brown, imbricate bracts"	"Acacia squamata"
669	"Peduncles 2–3 mm long; racemes (when present) not enclosed by conspicuous bracts"	"Acacia brachypoda"
670	"Heads sessile; phyllodes compressed-rhombic with a wide, prominent nerve at apex of each angle (SW W.A.)"	"Acacia epedunculata"
670	"Heads pedunculate; phyllodes not as above"	671
671	"Peduncles 8–12 mm long, glabrous; phyllodes terete, incurved; resinous, viscid shrub (arid zone: W.A., N.T.)"	"Acacia abrupta"
671	"Characters not combined as above (not arid zone)"	672
672	"Inflorescences simple AND peduncles ebracteate at base"	673
672	"Inflorescences mostly short but discernible, 1- or 2-headed racemes; peduncles with a single, persistent small bract at base, sparsely to densely white or golden appressed-puberulous"	675
673	"Pods coriaceous-crustaceous to subwoody; funicle 1/2–3/4 encircling seed; peduncles and branchlets glabrous; phyllodes commonly ±uncinate (S.A.)"	"Acacia nematophylla"
673	"Pods firmly chartaceous to thinly coriaceous; funicle not encircling seed; peduncles and branchlets hairy or glabrous; phyllodes not uncinate (Qld, N.S.W.)"	674
674	"Peduncles 5–10 mm long; phyllodes (dry) ±triquetrous in section with a discrete medial groove and a slightly broadened lower margin"	"Acacia burbidgeae"
674	"Peduncles 2–6 mm long; phyllodes without medial groove, slightly raised along midline, with lower margin not broader than upper"	"Acacia pilligaensis"
675	"Peduncles densely hairy; branchlets commonly with prominent yellow ribs at extremities (S.A., N.S.W., Vic.)"	"Acacia wilhelmiana"
675	"Peduncles ±sparsely hairy; branchlets not obviously ribbed (SW W.A.)"	"Acacia viscifolia"
676	"Sepals free or very shortly united at base"	677
676	"Sepals clearly united for 1/4 or more their length"	685
677	"Shrubs, resinous and viscid; phyllodes obscurely nerved, ±terete, obliquely truncate at excentrically mucronulate apices (arid zone: W.A., N.T.)"	"Acacia abrupta"
677	"Shrubs or trees, not resinous and viscid; phyllode characters not combined as above"	678
678	"Phyllodes to 7 cm long, ±terete with obscure nerves; branchlets ash grey (SW W.A.)"	679
678	"Phyllodes > 7 cm long"	680
679	"Inflorescences 1- or 2-headed racemes enclosed when young by conspicuous brown bracts, their scars observable at base of raceme axis (×10 mag.) after bracts have fallen; pulvinus glabrous"	"Acacia nigripilosa"
679	"Inflorescences simple; pulvinus appressed-puberulous abaxially"	"Acacia consanguinea"
680	"Phyllodes pentagonal by 5 prominent nerves (grooved in between when dry), ±straight, rigid and ascending to erect (SW W.A.)"	"Acacia longispinea"
680	"Phyllodes quadrangular to terete with 4, often obscure nerves"	681
681	"Phyllodes epulvinate or pulvinus smooth and very obscure"	682
681	"Phyllodes with a short yet distinct, transversely wrinkled pulvinus; funicle not or scarcely expanded into an aril"	683
682	"Pods 4 mm wide; funicle clearly arillate; shrubs 2–3 m high; phyllodes curved to sinuous, invested (especially when young) with ±circular, dark brown, sessile resin-papillae (SW W.A.)"	"Acacia graniticola"
682	"Pods 30–50 mm wide; funicle exarillate; trees to c. 15 m high; phyllodes not as above (arid zone: Qld, N.T.)"	"Acacia peuce"
683	"Phyllodes not puncticulate; bracteoles not exserted beyond flowers in buds; heads normally 1 or 2 in each axil; seeds mottled (Qld, N.S.W.)"	"Acacia juncifolia"
683	"Phyllodes obviously puncticulate (×10 mag.); bracteoles exserted beyond flowers in buds; heads 2–6 in each axil; seeds not mottled"	684
684	"Pods 8–18 mm wide; phyllodes with obscure gland normally 1–4 mm above pulvinus (W.A., N.T.)"	"Acacia jasperensis"
684	"Pods 3.5–5 mm wide; phyllodes with obscure gland 3–15 mm above pulvinus (N.T. & far NW Qld)"	"Acacia alleniana"
685	"Peduncles hairy (SW W.A.)"	686
685	"Peduncles glabrous"	687
686	"Heads obloid; peduncles densely tomentose with conspicuous, subcrisped hairs"	"Acacia ashbyae"
686	"Heads globular; peduncles minutely hirsutellous with short straight hairs"	"Acacia insolita"
687	"Branchlets prominently flexuose and pendulous; phyllodes 9–15 cm long, with 4 broad nerves separated by deep 4 deep furrows (SW W.A.)"	"Acacia sciophanes"
687	"Characters not combined as above"	688
688	"Phyllodes ±filiform, thin and flexible, 6–24 cm long, quadrangular to ±triquetrous in section and shallowly furrowed between nerves when dry"	689
688	"Phyllodes terete, often thick and rigid, nerveless or rather obscurely 4-nerved (nerves not raised or with furrows in between)"	690
689	"Phyllodes 5-nerved; pods 3–5 mm wide; shrubs not resinous (SW W.A.)"	"Acacia extensa"
689	"Phyllodes 4-nerved; pods 5–6 mm wide; shrubs somewhat resinous (Qld)"	"Acacia calantha"
690	"Shrub viscid; phyllodes rather slender, 2–9 cm long, with apices obliquely truncate with a gland at base of the excentric mucro (arid zone: W.A., N.T.)"	"Acacia abrupta"
690	"Shrub not viscid; phyllodes normally thick and often resembling the branchlets, with apices not as above (W.A.)"	691
691	"Heads 24–27-flowered; phyllodes 5–14 cm long; racemes subtended by minute, caducous bracts"	"Acacia wilcoxii"
691	"Heads 6–11-flowered; phyllodes 2–7 cm long; racemes enclosed when young by conspicuous, imbricate bracts; petals absent"	"Acacia squamata"
692	"Heads ±sessile"	693
692	"Heads pedunculate (peduncles 2 mm or more long)"	704
693	"Heads pale yellow, 5–15-flowered; pods 6–10 mm wide; aril large and yellow-orange (W.A., N.T., S.A., Qld, N.S.W., Vic.)"	"Acacia oswaldii"
693	"Heads golden, often more than 15-flowered; pods 1.5–4 mm wide; aril small and whitish"	694
694	"Bark 'Minni Ritchi' or red and shaggy"	695
694	"Bark not as above (W.A.)"	698
695	"Phyllodes 8-nerved, the nerves separated by deep furrows (SW W.A.)"	696
695	"Phyllodes more than 8-nerved OR if 8-nerved then nerves not separated by deep furrows, 6–18 cm long"	697
696	"Phyllodes 3.5–6 cm long, ±rigid; pods strongly undulate"	"Acacia repanda"
696	"Phyllodes 6–16 cm long, thin and flexible; pods not undulate"	"Acacia ephedroides"
697	"Phyllodes subterete to flat; bark 'Minni Ritchi'; flowers in obloid heads 5–7 mm long (Qld, N.S.W.)"	"Acacia curranii"
697	"Phyllodes terete; bark stringy and shaggy; flowers in obloid heads or cylindrical spikes 8–20 mm long (SW W.A.)"	"Acacia inophloia"
698	"Branchlets glabrous; heads obloid; phyllode nerves often brown-resinous"	"Acacia gibbosa"
698	"Branchlets hairy (indumentum sometimes closely appressed, observe at ×10 mag.); heads globular or obloid; phyllode nerves not brown-resinous"	699
699	"Phyllodes > 6 cm long"	700
699	"Phyllodes not more than 6 cm long"	701
700	"Pods flat, undulate; branchlets conspicuously hairy (hairs often crisped and covering the scarcely raised ribs)"	"Acacia eremophila"
700	"Pods terete, not undulate; branchlets rather obscurely hairy (sericeous by closely appressed, straight hairs confined to between the normally raised ribs)"	"Acacia coolgardiensis"
701	"Phyllodes compressed-rhombic with a wide, prominent nerve at apex of each angle"	"Acacia epedunculata"
701	"Phyllodes terete to subterete, nerves of uniform prominence"	702
702	"Phyllodes rounded-obtuse, 15–25 mm long, shallowly to strongly incurved"	"Acacia obesa"
702	"Phyllodes acute to distinctly mucronate, 20–60 mm long, straight"	703
703	"Phyllodes c. 16-nerved, the apices straight to slightly curved and sharply to coarsely pungent"	"Acacia densiflora"
703	"Phyllode characters not combined as above (normally c. 10-nerved and having innocuous, commonly reflexed-uncinate apices)"	"Acacia eremophila"
704	"Phyllodes not more than 5 cm long"	705
704	"Phyllodes some or all > 5 cm long"	727
705	"Phyllodes quadrangular-rhombic in section (W.A.)"	"Acacia heteroneura"
705	"Phyllodes terete to subterete"	706
706	"Phyllodes striate by numerous (> 8), fine, yellowish nerves, with the narrow internerve spaces clearly dark-coloured and marked with rows of evident stomata; branchlets often appressed-puberulous (SW W.A.)"	707
706	"Phyllodes not as above"	708
707	"Phyllodes some or all > 4 cm long, gradually narrowed at apices into delicate, curved tips"	"Acacia lineolata"
707	"Phyllodes 2–4 cm long, abruptly narrowed at apices into short, straight or slightly curved tips"	"Acacia dissona"
708	"Heads clearly obloid; phyllodes without evident stomata (SW W.A.)"	709
708	"Heads globular OR if slightly obloid then phyllodes with stomata evident (×10 mag.)"	710
709	"Phyllodes 1.5–4 cm long, 7-nerved (nerves not resinous), apices straight with a ±pungent mucro"	"Acacia pharangites"
709	"Phyllodes 4 cm or more long, 8-nerved (nerves often brown resinous), apices recurved to subuncinate"	"Acacia gibbosa"
710	"Phyllodes papillose by numerous, prominently raised stomata on strongly raised inter-nerve spaces, with nerves impressed at base of distinct longitudinal furrows; branchlets glabrous (SW W.A.)"	"Acacia papulosa"
710	"Phyllode and branchlet characters not combined as above"	711
711	"Phyllodes 1–4.5 cm long, nerves 8 or more, ±obscure; peduncles 2–5 mm long; sepals free; branchlets glabrous or sparsely uncinate-puberulous, ±resinous and tuberculate (W.A., S.A.)"	"Acacia sclerophylla"
711	"Characters not combined as above"	712
712	"Phyllodes with 5–8 distant nerves (i.e. inter-nerve spaces much wider than width of nerve)"	713
712	"Phyllodes nerveless or striate by numerous (> 8) fine close nerves"	720
713	"Branchlets and phyllodes resinous and commonly viscid; sepals 1/2-united to free; phyllode nerves often brownish and impressed"	714
713	"Branchlets and phyllodes not resinous; sepals free; phyllode nerves often raised and longitudinally furrowed in between (SW W.A.)"	715
714	"Phyllodes rather distinctly 6-nerved; peduncles glabrous; inflorescences simple (S.A.)"	"Acacia menzelii"
714	"Phyllodes obscurely 5- or 7-nerved; peduncles ±sparsely hairy; inflorescences often short racemes (SW W.A.)"	"Acacia viscifolia"
715	"Phyllodes 3.5 cm long or more, with apex drawn out in a delicate, curved, long-acuminate (mostly 2–6 mm), normally persistently hairy tip; pulvinus 1.5–3 mm long and terete"	"Acacia fragilis"
715	"Phyllode characters not combined as above"	716
716	"Peduncles 7–15 mm long, with a prominent and persistent basal bract"	717
716	"Peduncles 2–6 mm long, with base ebracteate at anthesis"	718
717	"Phyllodes 8-nerved; stipules persistent"	"Acacia octonervia"
717	"Phyllodes 6- or 7-nerved; stipules caducous"	"Acacia sulcata"
718	"Phyllodes 1–3.5 cm long; pulvinus slender, terete, transversely wrinkled and 1–2 mm long"	"Acacia uncinella"
718	"Phyllodes commonly > 3.5 cm long, the pulvinus ±smooth and slightly flared at base"	719
719	"Phyllodes straight to shallowly curved, ascending to erect, often shallowly and irregularly furrowed between the obscure nerves"	"Acacia consanguinea"
719	"Phyllodes often strongly curved to sigmoid and rather widely spreading, deeply and uniformly longitudinally furrowed between the nerves"	"Acacia subflexuosa"
720	"Branchlets densely and obviously hairy; phyllodes finely striate with stomata evident between nerves; peduncles commonly with scattered reddish resin-hairs (W.A.)"	"Acacia eremophila"
720	"Characters not combined as above"	721
721	"Phyllodes ±nerveless, 2–6 cm long, smooth, gradually narrowed into fine, curved, acute to short-acuminate tips; plants not resinous (SW W.A.)"	"Acacia enervia"
721	"Phyllode characters not combined as above"	722
722	"Peduncles glabrous; phyllodes 1–3.5 cm long; heads 8–17-flowered (SW W.A.)"	723
722	"Peduncles hairy OR if glabrous (rare) then other characters not combined as above (phyllodes 3 cm long or more)"	724
723	"Branchlets resinous; pods undulate, not constricted between the arillate seeds"	"Acacia nivea"
723	"Branchlets not resinous; pods not undulate, breaking readily at narrow constrictions between the exarillate seeds"	"Acacia dielsii"
724	"Sepals free; phyllodes shallowly curved to sigmoid; pulvinus smooth, flared at base (SW W.A.)"	"Acacia leptoneura"
724	"Sepals mostly united; phyllodes straight to shallowly curved"	725
725	"Calyx less than 1/2 length of corolla; heads subdensely flowered, not obviously resinous (buds easily dissected from heads) (W.A.)"	"Acacia heteroneura"
725	"Calyx 1/2 or more length of corolla; heads densely flowered and rather resinous (buds not easily dissected from heads)"	726
726	"Peduncles glabrous or sparsely hairy; phyllodes glabrous (W.A.)"	"Acacia resinosa"
726	"Peduncles densely hairy; phyllodes appressed-puberulous between nerves (S.A.)"	"Acacia rigens"
727	"Sepals free or very shortly united at base"	728
727	"Sepals clearly united for 1/2 their length or more"	747
728	"Inflorescences comprising 1–6-headed racemes on minute but clearly discernible axes (observe carefully at ×10 mag.)"	729
728	"Inflorescences simple (i.e. heads on axillary peduncles)"	732
729	"Heads 35–40-flowered; petals and sepals golden appressed-puberulous; pods 5–5.5 mm wide, ±moniliform (NW W.A.)"	"Acacia auripila"
729	"Heads 20–28-flowered; other characters not combined as above"	730
730	"Pods ±crustose, moniliform, 7–10 mm wide; phyllodes often curved to sinuous, filiform, terete to subterete, 8–18 mm long (W.A.)"	"Acacia sibilans"
730	"Pods chartaceous; phyllodes ±straight, subterete to flat, 4–12 cm long, acuminate with fine, delicately curved tips"	731
731	"Pods submoniliform, not reticulate, 2–5 mm wide (S.A., N.S.W., Vic.)"	"Acacia loderi"
731	"Pods flat, reticulate, 4–10 mm wide (W.A., S.A.)"	"Acacia papyrocarpa"
732	"Phyllodes quadrangular-rhombic in section, 8–22 cm long; heads obloid, with flowers densely arranged (W.A.)"	"Acacia jamesiana"
732	"Phyllodes terete to subterete"	733
733	"Phyllodes 8-nerved, commonly deeply longitudinally furrowed between the raised nerves"	734
733	"Phyllodes more than 8-nerved, with nerves fine, plane or slightly raised and not deeply furrowed in between"	739
734	"Heads obloid; phyllode nerves not raised, often brown resinous (SW W.A.)"	"Acacia gibbosa"
734	"Heads globular; phyllode nerves normally raised, not brown resinous"	735
735	"Phyllodes 3.5–7 cm long, ±irregularly curved to sigmoid, with a short, glabrous, curved-mucronate to subuncinate tip (SW W.A.)"	"Acacia subflexuosa"
735	"Phyllodes > 7 cm long and/or the apex drawn out in a delicate, curved, long-acuminate, normally hairy tip"	736
736	"Branchlets appressed-puberulous; peduncles 10–15 mm long; phyllodes 11–14 cm long (NW S.A.)"	"Acacia tenuior"
736	"Branchlets glabrous (ignore the often golden appressed-puberulous new growth); peduncles 4–10 mm long (SW W.A.)"	737
737	"Phyllodes terete, 6–16.5 cm long, deeply longitudinally furrowed between the raised nerves; heads 40–87-flowered"	"Acacia aulacophylla"
737	"Characters not combined as above"	738
738	"Phyllodes subterete to flat, (4.5–) 7–10 (–13) cm long; seeds mottled"	"Acacia triptycha"
738	"Phyllodes terete to subterete, 3.5–7 (–8) cm long; seeds not mottled"	"Acacia fragilis"
739	"Branchlets yellow-ribbed, sericeous between ribs; phyllodes multi-striate by yellowish nerves (some appearing more prominent than others); pods 2–3 mm wide (SW W.A., S.A., Qld, N.S.W., Vic.)"	"Acacia rigens"
739	"Characters not combined as above (W.A., S.A.)"	740
740	"Phyllode tips hairy (±plumose or appressed-puberulous) (W.A.)"	"Acacia assimilis"
740	"Phyllode tips glabrous"	741
741	"Phyllode nerves yellow, dark-coloured in inter-nerve spaces and with evident stomata (at ×10 mag.) (W.A.)"	"Acacia lineolata"
741	"Phyllode characters not combined as above"	742
742	"Branchlets densely and obviously hairy (normally tomentulose with curved or crisped hairs); phyllodes with stomata evident between nerves; peduncles commonly with scattered reddish resin-hairs (W.A.)"	"Acacia eremophila"
742	"Branchlets glabrous or sericeous (with straight, often sparse, closely appressed hairs); other characters not combined as above"	743
743	"Phyllodes 3–7.5 cm long, curved (often strongly so) to shallowly sigmoid; pulvinus smooth and flared at base; branchlets with dense, straight, appressed hairs at least at apices (W.A., rare)"	"Acacia leptoneura"
743	"Characters not combined as above (phyllodes often > 7.5 cm long and/or straight; pulvinus normally transversely wrinkled; branchlets often glabrous)"	744
744	"Branchlets and phyllodes resinous and aromatic (smelling of Friars Balsam, especially when crushed); pods 4 mm diam., ±woody, glabrous, resinous (W.A.)"	"Acacia balsamea"
744	"Branchlets and phyllodes not resinous and aromatic; pods not as above"	745
745	"Phyllodes 2–6 cm long, very obscurely nerved (often appearing ±nerveless), gradually narrowed into delicate, curved, acute to short-acuminate tips (W.A.)"	"Acacia enervia"
745	"Phyllodes some or all > 6 cm long, striate by fine but evident nerves (×10 mag.)"	746
746	"Pods undulate, 8–15 mm wide, villous with long, spreading, golden hairs (aging to white) (W.A.)"	"Acacia xanthocarpa"
746	"Pods not as above (W.A., S.A.)"	"Acacia ramulosa"
747	"Branchlets prominently flexuose, pendulous; phyllodes strongly incurved to sigmoid (SW W.A.)"	"Acacia anfractuosa"
747	"Branchlets ±straight, not pendulous; phyllodes straight to shallowly curved"	748
748	"Phyllodes angular-rhombic in section (W.A.)"	749
748	"Phyllodes terete to subterete or slightly rhombic in section"	751
749	"Phyllodes not rigid, acuminate with delicate, recurved tips, resin-nerved on angles; spikes densely flowered; pods 2 mm wide, ±constricted between seeds"	"Acacia resinimarginea"
749	"Characters not combined as above"	750
750	"Sepals at least 1/2 length of petals; phyllodes 8–22 cm long; heads obloid, with flowers very densely arranged"	"Acacia jamesiana"
750	"Sepals less than 1/2 length of petals; phyllodes 4–13 cm long; heads globular to obloid with flowers subdensely arranged"	"Acacia heteroneura"
751	"Phyllodes at least 15 cm long; heads cream to pale yellow; aril bright orange; pods 7–12 mm wide, moniliform (arid zone: W.A., N.T., S.A., Qld., N.S.W.)"	"Acacia coriacea"
751	"Phyllodes < 15 cm long; other characters not combined as above"	752
752	"Branchlets glabrous"	753
752	"Branchlets appressed-hairy (at least toward apices and/or between ribs)"	758
753	"Phyllodes papillose by numerous, raised stomata, with straight apices (SW W.A.)"	"Acacia papulosa"
753	"Phyllodes not papillose by raised stomata, with often gently curved apices"	754
754	"Phyllodes striate by numerous, fine, very close, non-resinous nerves (W.A.)"	755
754	"Phyllodes with 6–8, impressed, often brown-resinous nerves"	757
755	"Branchlets resin-encrusted; peduncles 3–9 mm long; pods 2–3 mm wide, glabrous, resinous"	"Acacia resinosa"
755	"Branchlets not resin-encrusted; other characters not combined as above"	756
756	"Pods undulate, 8–15 mm wide, villous with long, spreading, golden hairs (aging to white); heads 18–20-flowered"	"Acacia xanthocarpa"
756	"Pods not as above; heads c. 30-flowered"	"Acacia beauverdiana"
757	"Peduncles puberulous; branchlets yellow-ribbed (S.A.)"	"Acacia gracilifolia"
757	"Peduncles glabrous; branchlets not yellow-ribbed (SW W.A.)"	"Acacia gibbosa"
758	"Phyllodes 8-nerved"	759
758	"Phyllodes more than 8-nerved"	760
759	"Heads pale yellow to cream; pods 4–6 mm wide; phyllodes deeply furrowed between nerves (N.S.W.)"	"Acacia ptychoclada"
759	"Heads bright golden; pods 1.5–2 mm wide; phyllodes shallowly furrowed between nerves (W.A.)"	"Acacia desertorum"
760	"Phyllodes with stomata evident between the nerves (×10 mag.); peduncles commonly with scattered reddish resin-hairs (W.A.)"	"Acacia eremophila"
760	"Phyllodes without evident stomata"	761
761	"Pods 8–15 mm wide, villous with long, spreading, golden hairs (aging to white); branchlet ribs obscure (W.A.)"	"Acacia xanthocarpa"
761	"Pods 1.5–3 mm wide, glabrous or appressed-hairy; branchlets clearly yellow- or red-ribbed, at least at extremities"	762
762	"Pods submoniliform; peduncles densely hairy; sepals at least 1/2 length of petals (SW W.A., S.A., Qld, N.S.W., Vic.)"	"Acacia rigens"
762	"Pods linear, quadrangular-terete in section and not constricted between seeds; sepals usually less than 1/2 length of petals (SW W.A.)"	763
763	"Peduncles densely sericeous"	"Acacia heteroneura"
763	"Peduncles glabrous or sparsely hairy"	"Acacia desertorum"
764	"Phyllodes with 0–2 longitudinal nerves on each face [note 3]"	765
764	"Phyllodes some or all with more than 2 longitudinal nerves on at least one face, or reticulately nerved without discrete longitudinal nerves"	1437
765	"Inflorescences all or mostly in axillary racemes 3 mm or more long"	766
765	"Inflorescences simple (rarely interspersed with a few axillary racemes, or falsely racemose at ends of branchlets due to phyllode reduction) OR, if with normal axillary racemes, then the raceme axes < 3 mm long"	1067
766	"Phyllodes 2-nerved on each face (the second nerve sometimes not extending full length of phyllode)"	767
766	"Phyllodes nerveless or 1-nerved on each face"	787
767	"Phyllodes all < 6.5 cm long with l:w = 1–5"	768
767	"Phyllodes some or all > 6.5 cm long OR if shorter then l:w > 5"	777
768	"Flowers 6–10 in each head"	769
768	"Flowers 15–60 in each head"	770
769	"Flowers 5-merous; racemes 10–70 mm long; pods 6–9 mm wide, firmly chartaceous (N.S.W., A.C.T., Vic.)"	"Acacia pravissima"
769	"Flowers 4-merous; racemes c. 4 mm long; pods 5 mm wide, crustaceous to subwoody (W.A.)"	"Acacia disticha"
770	"Branchlets pruinose and glabrous; phyllodes glaucous"	771
770	"Characters not combined as above (branchlets hairy or glabrous, normally not pruinose although sometimes scurfy or waxy-white; phyllodes green or glaucous)"	774
771	"Calyx lobed to near middle; gland absent from phyllode apex; pods firmly chartaceous, 12–13 mm wide (Qld)"	"Acacia deuteroneura"
771	"Calyx ±truncate; gland (small) often present at base of phyllode mucro; pods coriaceous to crustaceous, 5–15 mm wide (W.A., N.T., Qld)"	772
772	"Peduncles in pairs along raceme axes; phyllode l:w = 1–2; pods 12–15 mm wide, strongly curved to once-coiled (W.A.)"	"Acacia didyma"
772	"Peduncles single along raceme axes; phyllode l:w = 2–5; pods 5–9 mm wide, ±straight"	773
773	"Peduncles 10–35 mm long; seed aril red or orange (northern W.A., N.T., Qld)"	"Acacia bivenosa"
773	"Peduncles c. 5 mm long; seed aril cream (SW W.A.)"	"Acacia xanthina"
774	"Peduncles 3–10 mm long; branchlet apices and new growth with patent hairs; pods crustaceous (W.A.)"	"Acacia telmica"
774	"Peduncles 10–35 mm long"	775
775	"Phyllodes orbicular to obdeltate, mostly 8–20 × 6–15 mm, with upper margin distally sinuate to sinuate-dentate; branchlets waxy-white (SW W.A.)"	"Acacia orbifolia"
775	"Characters not combined as above (not SW W.A.)"	776
776	"Phyllodes glabrous; heads golden, 16–23-flowered; pods not coiled, 5–9 mm wide (W.A., N.T., Qld)"	"Acacia bivenosa"
776	"Phyllodes tomentose at least when young; heads lemon yellow, 30–55-flowered; pods coiled, 3–4 mm wide (NW W.A.)"	"Acacia startii"
777	"Flowers 4-merous; racemes 2–6 mm long and 2-headed; phyllodes ±linear, 6–15 cm × 3–8 mm (SW W.A.)"	"Acacia veronica"
777	"Flowers 5-merous"	778
778	"Branchlets pruinose AND/OR some phyllode glands on triangular marginal projections"	779
778	"Branchlets not pruinose; phyllode glands not on prominent marginal projections"	781
779	"Glands commonly on triangular marginal projections; flowering peduncles minutely appressed-hairy (Qld)"	"Acacia wardellii"
779	"Glands not on marginal projections; peduncles glabrous (W.A.)"	780
780	"Heads subdensely 18–20-flowered; phyllodes 6–13 cm long (SW W.A.)"	"Acacia xanthina"
780	"Heads densely 46–56-flowered; phyllodes 15–25 cm long (northern W.A.)"	"Acacia kenneallyi"
781	"Heads white, cream or pale yellow; pods 8–40 mm wide; phyllodes 7–30 × 5–50 mm, openly reticulate between the equally prominent longitudinal nerves"	782
781	"Heads golden; pods 4–7 mm wide; phyllode characters not combined as above"	785
782	"Gland single, 10–25 mm above pulvinus; funicle 1/2 to wholly encircling seed; phyllodes often ±straight (SE Qld, N.S.W.)"	"Acacia binervata"
782	"Glands 2–4, the lowermost 0–5 mm above pulvinus; funicle not encircling seed; phyllodes often markedly falcate (N.T., N Qld)"	783
783	"Racemes 1–2 cm long; pods 12–15 mm wide (N.T.)"	"Acacia latescens"
783	"Racemes 5–15 cm long; pods 20–40 mm wide"	784
784	"Pods 2–2.5 cm wide; phyllodes 8–20 cm long (N.T.)"	"Acacia mimula"
784	"Pods 3–4 cm wide; phyllodes mostly 15–25 cm long (Qld)"	"Acacia rothii"
785	"Raceme axes ebracteate at base; funicle encircling seed; phyllodes with second nerve normally rather well developed and apices eglandular (N.S.W., Vic.)"	"Acacia difformis"
785	"Raceme axes subtended when young by bracts (bract scars persistent at anthesis, view carefully at ×10 mag.); funicle not encircling seed; phyllodes with obscure second nerve and small gland often present at base of apical mucro (W.A.)"	786
786	"Peduncles > 10 mm long; phyllodes not puncticulate"	"Acacia bivenosa"
786	"Peduncles < 10 mm long; phyllodes often puncticulate"	"Acacia rostellifera"
787	"Phyllodes sharply pungent with needle-like points that readily pierce the skin upon touch"	788
787	"Phyllodes innocuous or sometimes with hard, rigid points (which do not pierce the skin)"	803
788	"Phyllodes some or all > 10 mm wide AND > 15 mm long"	789
788	"Phyllodes not more than 10 mm wide OR if wider then not more than 15 mm long"	792
789	"Flowers 4-merous; heads 5–12-flowered; sepals united; stipules not spinose, caducous; pods 3–4 mm wide, with margins undulate; phyllodes 10–35 × 8–30 mm (W.A.)"	"Acacia heterochroa"
789	"Flowers 5-merous; heads 25–80-flowered; sepals free; stipules often spinose; pods 7–15 mm wide, with margins not undulate"	790
790	"Phyllodes symmetric with midrib centrally situated, often glaucous; inflorescence axes yellowish or with a pale purplish tinge; heads 70–80-flowered (W.A.)"	"Acacia pyrifolia"
790	"Phyllodes asymmetric with midrib situated near lower margin; inflorescence axes brightly coloured; heads 25–35-flowered"	791
791	"Branchlet apices white-pruinose; phyllodes 15–35 mm wide, commonly grey green and pruinose, with a prominent, close reticulum; inflorescence axes purple; bark corky (W.A., N.T.)"	"Acacia inaequilatera"
791	"Branchlet apices not pruinose; phyllodes 10–20 mm wide, pale green to subglaucous, with an obscure, open reticulum; inflorescence axes red-brown; bark fibrous (W.A.)"	"Acacia marramamba"
792	"Flowers 4-merous; heads 5–12-flowered; sepals united; stipules not spinose, caducous; phyllodes 10–35 × 8–30 mm; pods 3–4 mm wide, with margins undulate (W.A.)"	"Acacia heterochroa"
792	"Flowers 5-merous; heads 10–90-flowered; sepals free (except in A. hubbardiana, Qld)"	793
793	"Phyllodes 20–45 cm long, 1.5–3 mm wide; heads 70–90-flowered; pods 6–8 mm wide (W.A.)"	"Acacia aphanoclada"
793	"Phyllodes 0.5–11 cm long"	794
794	"Stipules spinose (W.A.)"	795
794	"Stipules not spinose"	796
795	"Stipules 5–12 mm long; phyllodes 3–6 cm long, midrib ±central; pods 8–10 mm wide"	"Acacia dempsteri"
795	"Stipules < 5 mm long, sometimes only hardened bases persisting; phyllodes 0.5–3 cm long, midrib often near lower margin; pods 4–5 mm wide"	"Acacia congesta"
796	"Branchlets ending in hard, rigid ±spinose points (sharply or coarsely pungent)"	797
796	"Branchlets not as above; inflorescences (except A. hubbardiana, Qld) enclosed when young by imbricate bracts (at anthesis observe bract scars at base of raceme axes)"	799
797	"Phyllodes elliptic to widely elliptic, 9–15 × 4–12 mm; branchlets minutely hairy, with ribs not prominent; pods coiled, c. 4 mm wide (W.A.)"	"Acacia botrydion"
797	"Phyllodes ±linear; branchlets glabrous, striate by ±prominent ribs"	798
798	"Phyllodes 5–20 × 1–1.5 mm; pods to 18 cm long and 6–12 mm wide (W.A., N.T.)"	"Acacia wiseana"
798	"Phyllodes 20–70 × 1–5 mm; pods to 11.5 cm long and 4–6 mm wide (W.A.)"	"Acacia scleroclada"
799	"Phyllodes not more than 20 mm long"	800
799	"Phyllodes some or all > 20 mm long"	801
800	"Sepals united; phyllode midrib intersecting adaxial margin below apical point; pods straight, 10–15 mm wide (Qld)"	"Acacia hubbardiana"
800	"Sepals free; phyllode midrib extending into apical point; pods coiled, 4–5 mm wide (W.A.)"	"Acacia camptoclada"
801	"Petals with appressed, scattered, brown to black hairs; aril thick (W.A.)"	"Acacia nigripilosa"
801	"Petals glabrous; funicle filiform, exarillate"	802
802	"Phyllodes 4–9 mm wide; branchlet ribs, phyllode margins and midrib not resinous (W.A.)"	"Acacia hemiteles"
802	"Phyllodes 0.5–3 (–5) mm wide; branchlet ribs, phyllode margins and midrib often viscid (W.A., N.T.)"	"Acacia prainii"
803	"Branchlets ending in rigid, spinose or subspinose points; phyllodes sometimes few and scattered (W.A.)"	804
803	"Branchlets not as above; phyllodes numerous and conspicuous"	807
804	"Phyllodes 9–15 × 4–12 mm, elliptic to widely elliptic, ±undulate (SW W.A.)"	"Acacia botrydion"
804	"Phyllodes longer and/or narrower than above, ±linear, not undulate"	805
805	"Branchlets not striate; heads cream, 14–16-flowered; calyx minute, truncate (W.A.)"	"Acacia microcalyx"
805	"Branchlets striate-ribbed; heads pale yellow to golden, 25–40-flowered; sepals free to base"	806
806	"Phyllodes 5–20 × 1–1.5 mm; pods 6–12 mm wide; seeds globose, 5–9 mm diam. (W.A., N.T.)"	"Acacia wiseana"
806	"Phyllodes 20–70 × 1–4 mm; pods 4–6 mm wide; seeds elliptic, 5–6 mm long (W.A.)"	"Acacia scleroclada"
807	"Phyllodes not more than 3.5 cm long"	808
807	"Phyllodes some or all > 3.5 cm long"	865
808	"Phyllodes 4–12 × 3–14 mm, l:w = 1–1.5, glabrous, markedly inequilateral; heads 6–9-flowered; racemes longer than phyllodes (N.S.W., A.C.T., Vic.)"	"Acacia pravissima"
808	"Characters not combined as above"	809
809	"Branchlets hairy to some degree (hairs sometimes sparse or minute, observe at ×10 mag.)"	810
809	"Branchlets completely glabrous"	831
810	"Phyllodes nerveless, 0.5–2 mm wide"	811
810	"Phyllodes with midrib discernible (but sometimes very fine), often > 2 mm wide"	814
811	"Heads 4–12-flowered (N.S.W.)"	812
811	"Heads 20–50-flowered, golden; pods 4–7 mm wide"	813
812	"Heads creamy yellow, 6–12-flowered; pods 7–13 mm wide"	"Acacia linifolia"
812	"Heads yellow to dark yellow, 4–8-flowered; pods 4–7 mm wide"	"Acacia meiantha"
813	"Heads 25–50-flowered, 7–9 mm diam. (Qld, N.S.W.)"	"Acacia ruppii"
813	"Heads c. 20-flowered, 4–5 mm diam. (Qld)"	"Acacia gittinsii"
814	"Phyllodes puncticulate by circular, blackish resin-papillae, 10–30 mm long, 2–5 mm wide, sometimes prominently undulate, the margins and midribs verruculose by persistent, yellow, tubercle-bases of hairs (SW W.A.)"	"Acacia tuberculata"
814	"Phyllodes not as above"	815
815	"Peduncles twinned along raceme axis, 6–18 mm long; heads creamy white to pale lemon-yellow; sepals free; stipules spiny (especially on young plants) (arid zone: W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia victoriae"
815	"Peduncles all or mostly single and alternately arranged along raceme axis; other characters not combined as above"	816
816	"Heads obloid to subglobular; pod 8–14 mm wide, tomentulose or velvety with ferruginous to silvery-ferruginous hairs"	817
816	"Heads globular; pods not as above"	818
817	"Phyllodes 10–20 mm long, with straight, appressed hairs (N.S.W.)"	"Acacia costiniana"
817	"Phyllodes 15 mm or more long, with curved or crisped, spreading or appressed hairs (N.S.W., Vic.)"	"Acacia lucasii"
818	"Raceme axes subtended when young by bracts (bract scars persistent at anthesis, view carefully at ×10 mag.); pods crustaceous; aril normally orange or red; calyx ±truncate (W.A.)"	819
818	"Raceme axes ebracteate at base; pods coriaceous to chartaceous; aril creamy white; calyx normally dissected to some degree (not W.A.)"	820
819	"Phyllodes minutely appressed-puberulous over entire surface; peduncles 10–25 (–30) mm long; pods 8–13 mm wide"	"Acacia tysonii"
819	"Phyllodes glabrous or sparsely hairy near base; peduncles 6–10 mm long; pods 4–5 mm wide"	"Acacia telmica"
820	"Racemes 1–10 mm long; peduncles or new shoots often golden-hairy"	821
820	"Racemes some or all > 10 mm long"	823
821	"Phyllodes (mature) glabrous, more than 10 times longer than wide (S.A., Vic.)"	"Acacia × grayana"
821	"Phyllodes (mature) sericeous or glabrous, less than 10 times longer than wide"	822
822	"Phyllode length and indumentum characters not combined as above (S.A., N.S.W., Vic.)"	"Acacia brachybotrya"
822	"Phyllodes 2.5 cm or more long, densely sericeous (new shoots bright greenish yellow, mature phyllodes silvery blue-grey) (S.A., Vic.)"	"Acacia argyrophylla"
823	"Peduncles and/or raceme axes golden-hairy at least when young (hairs sometimes aging silvery); phyllodes normally oblanceolate and glabrous or sparsely hairy at base"	"Acacia decora"
823	"Peduncles and/or raceme axes glabrous or white-hairy"	824
824	"Phyllodes patent to reflexed, often glabrous or sparsely hairy, 15–30 × 3–6 mm; branchlets pilose to villous; funicle encircling seed (Qld)"	"Acacia leichhardtii"
824	"Phyllode and branchlet characters not combined as above; funicle not encircling seed"	825
825	"Phyllodes with an indumentum of (normally dense) spreading hairs, l:w = 1.5–5, with apical points sometimes ±setose"	826
825	"Phyllodes glabrous or sparsely appressed-hairy"	829
826	"Phyllodes 10–20 mm long, 4–10 mm wide; gland 0–1.5 mm above pulvinus; heads 12–18-flowered; pods 10–14 mm wide (N.S.W.)"	"Acacia vestita"
826	"Phyllodes 20 mm or more long; heads 14–30-flowered"	827
827	"Heads pale yellow; peduncles 8–16 (–20) mm long"	"Acacia uncinata"
827	"Heads golden; peduncles 4–10 mm long"	828
828	"Branches not pruinose; phyllodes with l:w normally 3–5; gland 1–5 mm above pulvinus; pods 6–10 mm wide (Qld)"	"Acacia uncifera"
828	"Branches pruinose; phyllodes with l:w = 1.5–2.5; gland 8–18 mm above pulvinus; pods 15–25 mm wide (Qld, N.S.W.)"	"Acacia podalyriifolia"
829	"Peduncles 1–3 mm long, densely appressed-hairy; branchlets densely tomentulose or appressed-puberulous with hairs covering entire surface; pods 10–20 mm wide (N.S.W., Vic.)"	"Acacia kybeanensis"
829	"Peduncle and branchlet characters not combined as above; pods 4–9 mm wide"	830
830	"Phyllodes 1.5–5 mm wide, l:w = 5–25, margins commonly appressed-hairy; gland ±prominent, 1–6 mm above pulvinus; branchlet hairs confined to ribs (Qld, N.S.W.)"	"Acacia fimbriata"
830	"Phyllodes 5–9 mm wide, l:w = 2.5–4; margins with a few hairs near base; gland not prominent, 6–12 mm above base, sometimes absent; branchlet hairs not confined to ribs (Qld)"	"Acacia semilunata"
831	"Flowers 4-merous; heads 2–5 (–8)-flowered; calyx ±truncate; pods 3–5 mm wide, margins undulate (W.A., S.A., Qld, N.S.W., Vic., Tas.)"	"Acacia myrtifolia"
831	"Flowers 5-merous; other characters not combined as above"	832
832	"Racemes subtended when young by bracts (bract scars persistent at base of raceme axes at anthesis, view carefully at ×10 mag.)"	833
832	"Raceme axes ebracteate at base"	839
833	"Sepals united into a ±truncate calyx; aril red or orange; pods woody or firmly crustaceous (arid zone)"	834
833	"Sepals free; aril (when present) not red or orange; pods chartaceous to coriaceous-crustaceous (SW W.A.)"	835
834	"Phyllodes with l:w = 2–5, commonly glaucous; peduncles (10–) 15–35 mm long (W.A., N.T., Qld)"	"Acacia bivenosa"
834	"Phyllodes with l:w = 5–19, usually green; peduncles 2–10 (–15) mm long (all mainland States)"	"Acacia ligulata"
835	"Phyllodes < 2 cm long; funicle ±exarillate"	836
835	"Phyllodes at least 2 cm long; pods never coiled"	837
836	"Phyllodes 2–5 mm wide, with mucro distinct and ±pungent; racemes 1–4 mm long; pods 4–5 mm wide, coiled"	"Acacia camptoclada"
836	"Phyllodes 5–9 mm wide, innocuous; racemes 10–25 mm long; pods 11 mm wide, ±straight"	"Acacia dorsenna"
837	"Racemes 1- or 2-headed; petals with sparse brown to black appressed hairs; branchlets ash grey; pods submoniliform, 4–7 mm wide; funicle arillate"	"Acacia nigripilosa"
837	"Racemes 3–10-headed; petals glabrous; other characters not combined as above"	838
838	"Penultimate branchlets terete; pods 5–7 mm wide; funicle exarillate; phyllodes 0.5–3 mm wide; racemes 3–15 mm long"	"Acacia prainii"
838	"Penultimate branchlets acutely angled; pods 10–20 mm wide; aril brown-black; phyllodes 3–9 mm wide; racemes 20–35 mm long"	"Acacia subcaerulea"
839	"Heads with 3–12 flowers (not W.A. or N.T.)"	840
839	"Heads with more than 12 flowers (all states)"	849
840	"Phyllodes 0.4–5 mm wide, l:w = 5–50, ±linear"	841
840	"Phyllodes some or all > 5 mm wide OR if not then l:w < 5 or not linear"	844
841	"Phyllodes 0.4–1 mm wide, nerveless; heads yellow to dark yellow, 4–8-flowered; pods 4–7 mm wide (N.S.W.)"	"Acacia meiantha"
841	"Characters not combined as above"	842
842	"Heads creamy yellow, 6–12-flowered; pods 7–13 mm wide; phyllodes 0.5–2 mm wide (N.S.W.)"	"Acacia linifolia"
842	"Heads golden (rarely cream in A. fimbriata)"	843
843	"Phyllode gland prominent; heads 8–20-flowered; pods 5–9 mm wide (Qld, N.S.W.)"	"Acacia fimbriata"
843	"Phyllode gland not prominent; heads 5–10-flowered; pods 4–6 mm wide (N.S.W., Vic.)"	"Acacia boormanii"
844	"Funicle encircling seed; flower buds spreading and often subacute; glands 10–16 mm above pulvinus, not prominent (S.A.)"	"Acacia quornensis"
844	"Funicle not encircling seed; flower buds obtuse (not S.A.)"	845
845	"Gland prominent, submerged and swollen within the lamina in a ±pouch-like fashion, with orifice at distal end of gland and usually downward-pointing"	846
845	"Gland not as above"	847
846	"Phyllodes 3–4 mm wide (N.S.W.)"	"Acacia kettlewelliae"
846	"Phyllodes > 4 mm wide (Tas.)"	"Acacia pataczekii"
847	"Heads 3–5-flowered; phyllodes 5–9 mm wide, l:w = 3–5, normally inequilateral with lower margin ±straight and upper margin curved; branchlets not pruinose (N.S.W.)"	"Acacia lunata"
847	"Heads 5–12-flowered; phyllodes with both margins curved or upper margin straight (rarely lower margin straight as in A. lunata)"	848
848	"Phyllodes 6–14 mm wide, l:w = 2–3, obtuse to subacute; branchlets (at least when young), calyx and raceme axes pruinose (N.S.W.)"	"Acacia leucolobia"
848	"Phyllodes 2–6 (–10) mm wide, l:w = 3–6, acute to subacute; branchlets, calyx and raceme axes normally not pruinose (Qld, N.S.W., A.C.T., Vic.)"	"Acacia buxifolia"
849	"Peduncles all or mostly twinned along raceme axis; stipules spiny (at least on young plants); heads creamy white to pale lemon-yellow; sepals free; pods 8–16 mm wide, chartaceous; seeds ±exarillate"	850
849	"Peduncles all or mostly single and alternately arranged along raceme axis; stipules never spiny; heads often golden; sepals free or united; pods rarely > 8 mm wide; seeds arillate"	852
850	"Phyllodes 10–25 (–33) mm wide, retuse to subretuse, green; heads 60–90-flowered; peduncles robust (W.A.)"	"Acacia chartacea"
850	"Phyllode characters not combined as above; heads less than 60-flowered; peduncles slender"	851
851	"Heads 20–30-flowered; phyllodes 2 cm or more long, 2–11 mm wide, l:w = 2–20, with midrib rather prominent (arid zone: W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia victoriae"
851	"Heads 35–50-flowered; phyllodes 1.5–2.5 cm long, (5–) 7–13 mm wide, l:w = 1.5–3, with midrib not prominent (NW W.A.)"	"Acacia glaucocaesia"
852	"Racemes 0.5–5 mm long"	853
852	"Racemes some or all exceeding 5 mm long"	854
853	"Phyllodes with l:w > 10 (S.A., Vic.)"	"Acacia × grayana"
853	"Phyllodes with l:w < 10 (S.A., N.S.W., Vic.)"	"Acacia brachybotrya"
854	"Sepals free; branchlets commonly pruinose; funicle 1/2 to completely encircling seed (SW W.A.)"	855
854	"Sepals united for at least 1/4 their length OR if free (occasionally in A. fimbriata) then branchlets not pruinose and funicle not encircling seed (not W.A.)"	857
855	"Inflorescences mostly simple (racemes few); phyllodes normally elliptic or obovate to shortly oblanceolate, 15 mm or more long, 5–15 mm wide, l:w = 2–4 (–8)"	"Acacia meisneri"
855	"Inflorescences mostly racemose but interspersed with a few simple, axillary heads"	856
856	"Phyllodes some or all with l:w > 3, 3–11 mm wide, narrowly elliptic to oblanceolate (never ovate)"	"Acacia leptopetala"
856	"Phyllodes l:w = 1.5–3, 8–17 mm wide, normally elliptic to ovate"	"Acacia merrickiae"
857	"Peduncles and raceme axes densely appressed-puberulous with normally golden hairs (Qld, N.S.W., Vic.)"	"Acacia decora"
857	"Peduncles and raceme axes glabrous or with ±sparse, spreading, white hairs"	858
858	"Heads loosely 8–15-flowered, with buds spreading and often subacute; phyllodes acute to acuminate, 4–10 mm wide, l:w = 4–10; funicle encircling seed (S.A.)"	"Acacia quornensis"
858	"Heads densely flowered, with buds obtuse; phyllodes not as above; funicle not encircling seed (except A. chalkeri) (not S.A.)"	859
859	"Bracteoles and often petal apices blackish (Qld, N.S.W.)"	"Acacia buxifolia"
859	"Bracteoles and petals not as above"	860
860	"Funicle encircling seed; phyllodes 25–55 × 3–10 mm, l:w = 4.5–12, broadest above middle and narrowed to base; gland not prominent; heads 18–23-flowered (N.S.W.)"	"Acacia chalkeri"
860	"Funicle not encircling seed; other characters not combined as above"	861
861	"Phyllodes 2–5 mm wide, l:w = 5–25; gland 1–6 mm above pulvinus and ±prominent (Qld, N.S.W.)"	"Acacia fimbriata"
861	"Phyllodes some or all > 5 mm wide, l:w = 1.5–6"	862
862	"Phyllodes symmetrical (i.e. both the upper and lower margins curved), 10–25 mm wide, l:w = 1.5–2.5; pods 15–20 mm wide (Qld)"	"Acacia podalyriifolia"
862	"Phyllodes usually asymmetric with lower margin ±straight and upper margin angled or rounded; pods 4–11 mm wide"	863
863	"Gland 2–4 mm above pulvinus, submerged and swollen within the lamina (Tas.)"	"Acacia pataczekii"
863	"Gland not as above (not Tas.)"	864
864	"Heads obloid or globular; pods 5–8 mm wide; phyllodes markedly convex or angled along their upper margin; gland prominent (Qld, N.S.W.)"	"Acacia cultriformis"
864	"Heads globular; pods 4–5 mm wide; phyllodes shallowly convex along upper margin; gland not prominent, sometimes absent (Qld)"	"Acacia semilunata"
865	"Flowers 4-merous"	866
865	"Flowers 5-merous"	869
866	"Heads 24–27-flowered, white to cream; resinous shrubs (SW W.A.)"	"Acacia veronica"
866	"Heads 2–8-flowered; non-resinous shrubs"	867
867	"Ovaries 3–5 in each flower, glabrous; phyllode gland prominent, 5–20 mm above pulvinus; heads bright light-golden, normally 2- or 3-flowered; branchlets pruinose (SW W.A.)"	"Acacia celastrifolia"
867	"Ovary 1 in each flower; heads cream to creamy-yellow, rarely bright lemon-yellow (in A. myrtifolia); branchlets mostly not pruinose"	868
868	"Ovary glabrous; heads 5–7-flowered; gland 0–4 (–8) mm above pulvinus (SW W.A.)"	"Acacia clydonophora"
868	"Ovary tomentulose; heads normally 2–5-flowered; gland 5–20 mm above pulvinus (W.A., S.A., Qld, N.S.W., Vic., Tas.)"	"Acacia myrtifolia"
869	"Racemes enclosed (when young) by a series of small or large, normally caducous, imbricate bracts (bract scars persistent at base of raceme axes, view carefully at ×10 mag.) (commonly arid zone or SW W.A.)"	870
869	"Raceme axes ebracteate at base or with a single small bract"	891
870	"Sepals united, with calyx often ±truncate; aril always present, often red or orange"	871
870	"Sepals free; aril often absent, never red or orange"	885
871	"Heads with 6–9 flowers; rush-like subshrubs < 1 m high (SW W.A.)"	"Acacia flagelliformis"
871	"Heads with more than 10 flowers; shrubs or trees > 1 m high"	872
872	"Phyllodes 7–20 cm × 1–1.5 mm, ±terete but sometimes flattish when dry, fleshy; racemes 10–40 mm long, normally growing out at anthesis; aril not red (SW W.A.)"	"Acacia scirpifolia"
872	"Characters not combined as above"	873
873	"Phyllodes horizontally flattened with gland on upper surface of lamina 5–12 mm above pulvinus (SW W.A.)"	"Acacia blakelyi"
873	"Phyllodes vertically flattened with gland on upper margin of phyllode"	874
874	"Heads 25–78-flowered, golden; phyllodes 7–25 cm long, (2–) 4–20 mm wide (or larger); gland 0–3 mm above pulvinus; pods thinly coriaceous; aril white (SW W.A., naturalised elsewhere)"	"Acacia saligna"
874	"Characters not combined as above (pods normally crustaceous to woody; aril normally red or orange; small gland often present on phyllodes at base of apical mucro)"	875
875	"Heads white, cream or pale yellow; phyllodes thin and ±flaccid, often large (4–25 × 0.4–3 cm); branchlets normally pendulous"	876
875	"Heads golden; phyllodes not flaccid, sometimes thick (thus wrinkled upon drying); branchlets not pendulous"	877
876	"Heads 15–25-flowered; pods 7–13 mm wide; branchlets dark grey to reddish brown; phyllodes drying grey-green (all mainland states except W.A.)"	"Acacia salicina"
876	"Heads 25–50-flowered; pods 5–6 mm wide; branchlets yellow to yellow-brown; phyllodes drying light-green (W.A., N.T.)"	"Acacia ampliceps"
877	"Phyllodes minutely appressed-puberulous over entire surface; peduncles 10–25 (–30) mm long; pods 8–13 mm wide (W.A.)"	"Acacia tysonii"
877	"Phyllodes ±glabrous (rarely puberulous with short patent hairs)"	878
878	"Branchlets densely puberulous; phyllodes 20–40 × 8–20 mm, l:w = 2–4; peduncles 6–10 mm long, normally sparsely puberulous; pods 4–5 mm wide (SW W.A.)"	"Acacia telmica"
878	"Branchlets glabrous OR if hairy then other characters not combined as above"	879
879	"Phyllode apices not uncinate, rounded-obtuse with a minute ±central mucro; phyllodes narrowly linear, 3–7 cm × 1–4 mm, l:w = 11–40; branchlets often red-brown (W.A., S.A., Vic.)"	"Acacia cupularis"
879	"Phyllode apices ±uncinate or excentrically mucronulate and often acute OR if otherwise then phyllodes not as above; branchlets not red-brown"	880
880	"Pods 1–2 cm wide; branchlets light grey (W.A.)"	"Acacia sclerosperma"
880	"Pods < 1 cm wide"	881
881	"Phyllodes 2–5 cm long OR if longer then peduncles > 10 mm long"	882
881	"Characters not combined as above"	883
882	"Peduncles some or all > 10 mm long; phyllodes with l:w = 2–5 and mucro straight or slightly incurved; pods firmly crustaceous (W.A., N.T., Qld)"	"Acacia bivenosa"
882	"Peduncles < 10 mm long; phyllodes with l:w > 5 and mucro recurved to straight; pods woody (all mainland states)"	"Acacia ligulata"
883	"Branchlets pruinose; phyllodes glaucous; aril cream (SW W.A.)"	"Acacia xanthina"
883	"Branchlets not pruinose (although often scurfy); phyllodes green (rarely glaucous in A. ligulata); aril orange or red"	884
884	"Pods woody; phyllodes thick (thus usually wrinkled when dry), 3–7.5 cm long; glands 3 on at least some phyllodes (all mainland states)"	"Acacia ligulata"
884	"Pods firmly crustaceous; phyllodes thin, 5–11.5 cm long; glands 2 (SW W.A.)"	"Acacia rostellifera"
885	"Racemes 1–3 mm long, 1- or 2-headed; petals with scattered, appressed, brown to black hairs; funicle arillate (SW W.A.)"	"Acacia nigripilosa"
885	"Racemes 3–40 mm long, 2–16-headed; petals glabrous"	886
886	"Heads cream to lemon yellow; funicle arillate"	887
886	"Heads golden; racemes < 2 cm long; pods 5–8 mm wide; funicle exarillate"	889
887	"Heads 3–10-flowered; peduncles 3–5 mm long; racemes 10–25 mm long; pods 2–5 cm × 10–20 mm; seeds transverse in pod (S.A., Qld, N.S.W., Vic., Tas.)"	"Acacia suaveolens"
887	"Heads 10–20-flowered; peduncles 5–10 mm long; racemes 20–40 mm long"	888
888	"Phyllodes slightly thickened, finely longitudinally wrinkled when dry; pods 2–5 cm long, 10–20 mm wide; seeds transverse in pods (W.A.)"	"Acacia subcaerulea"
888	"Phyllodes thin, smooth when dry; pods 6–12 cm long, 6–12 mm wide; seeds longitudinal in pods (S.A.)"	"Acacia iteaphylla"
889	"Phyllodes 4–10 cm long, 4–9 mm wide (W.A.)"	"Acacia hemiteles"
889	"Phyllodes normally > 10 cm long AND/OR less then 4 mm wide"	890
890	"Phyllodes 9–15 cm long, 2–5 mm wide (W.A.)"	"Acacia anthochaera"
890	"Phyllodes < 9 cm long OR if to 11 cm then 1–2 mm wide (W.A., N.T., S.A.)"	"Acacia prainii"
891	"Phyllodes 3–6 cm long, lanceolate to narrowly lanceolate; stipules spiny, 5–10 mm long; heads golden, 40–50-flowered (W.A.)"	"Acacia dempsteri"
891	"Characters not combined as above"	892
892	"Peduncles all or mostly 2 or 3 together at each node along raceme axes"	893
892	"Peduncles single at each node and alternate (rarely opposite) along raceme axes"	901
893	"Sepals united; bracteoles, sepal apices or petals densely hairy (hairs often golden); stipules not spinose; branchlets often pruinose; phyllodes large (7–27 cm long, 3–17 mm wide)"	894
893	"Sepals free; indumentum of bracteoles, petals and sepals not as above; stipules sometimes spinose"	896
894	"Phyllodes with obvious lateral nerves, 15–25 cm long, 6–14 mm wide; bracteole and sepal apices white- or pale yellow-hairy; aril large (northern W.A.)"	"Acacia kenneallyi"
894	"Phyllodes with very obscure lateral nerves; bracteole and sepal apices densely golden-hairy; aril small or absent (arid zone)"	895
895	"Phyllodes obtuse to subacute, 7–17 cm long, 6–20 (–30) mm wide (W.A., N.T., S.A.)"	"Acacia pruinocarpa"
895	"Phyllodes long-acuminate, 15–27 cm long, 3–8 mm wide (Qld)"	"Acacia ensifolia"
896	"Phyllodes 10–25 (–33) mm wide, l:w = 2–4 (–5), not linear, retuse to subretuse; heads 60–90-flowered (W.A.)"	"Acacia chartacea"
896	"Phyllodes < 10 mm wide, often linear"	897
897	"Branchlets pruinose; phyllodes 20–45 cm long; heads golden; wispy shrub (NW W.A.)"	"Acacia aphanoclada"
897	"Branchlets not pruinose OR if so then phyllodes less then 20 cm long"	898
898	"Heads golden, 30–45-flowered; stipules not spinose; pods c. 4 mm wide (SW W.A.)"	899
898	"Heads creamy white to pale lemon-yellow; stipules spiny but commonly absent from mature plants; pods 6–16 mm wide"	900
899	"Phyllodes pulvinate, easily detached from branchlets, 2–5 mm wide, straight to shallowly curved"	"Acacia dentifera"
899	"Phyllodes sessile, not easily separated from branchlets, 1–3 mm wide, curved to sinuous"	"Acacia graniticola"
900	"Heads 60–80-flowered; pods 7–8 mm wide (NW W.A.)"	"Acacia alexandri"
900	"Heads 15–30-flowered; pods 9–16 mm wide (arid zone: W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia victoriae"
901	"Phyllodes 1–5 mm wide"	902
901	"Phyllodes some or all > 5 mm wide"	976
902	"Phyllodes 10–30 (–45) × 2–5 mm, puncticulate when young by blackish, circular, resin-papillae, with margins and midribs verruculose by persistent, yellow, tubercle-bases of hairs, sometimes prominently undulate (SW W.A.)"	"Acacia tuberculata"
902	"Phyllodes not as above"	903
903	"Sepals free AND phyllode glands not pustular; funicle often exarillate (species sometimes occurring in arid zone)"	904
903	"Sepals united for at least 1/4 their length OR if free (rare) then gland pustular (i.e. large and swollen, with a thickened rim projecting well beyond the margin); funicle always arillate (species never occurring in arid zone)"	920
904	"Phyllodes with rather obvious anastomosing lateral nerves that arch downwards near the margin, 10–15 cm long; racemes 2–10 mm long; peduncles 10–20 mm long; pods 20–23 mm wide; funicle exarillate (Qld)"	"Acacia crombiei"
904	"Characters not combined as above"	905
905	"Peduncles and/or raceme axes hairy to some degree (hairs normally appressed and often sparse, commonly absent in fruit, observe carefully at ×10 mag.)"	906
905	"Peduncles and raceme axes completely glabrous"	910
906	"Phyllodes with midrib and marginal nerves obviously resinous; branchlets obviously resin-ribbed (SW W.A.)"	"Acacia diaphana"
906	"Phyllode nerves and branchlet ribs not resinous"	907
907	"Peduncles 2–4 mm long, golden appressed-puberulous; racemes 4–20 mm long, golden appressed-puberulous; bracteoles golden-fimbriolate; funicle 1/2 to wholly encircling seed (SW W.A.)"	"Acacia chrysella"
907	"Peduncle, raceme and bracteole characters not combined as above; funicle sometimes looped below seed but not encircling it (not SW W.A.)"	908
908	"Racemes 1–5 mm long; heads 20–35-flowered; phyllodes glabrous (hairy when young); peduncles 4–12 mm long (S.A., Vic.)"	"Acacia × grayana"
908	"Racemes > 5 mm long; heads 7–20-flowered; phyllodes commonly hairy; peduncles 1.5–5 mm long"	909
909	"Phyllodes 2–5 mm wide, appressed-hairy on margins only, or glabrous; heads 8–20-flowered (Qld, N.S.W.)"	"Acacia fimbriata"
909	"Phyllodes 4 mm or more wide, appressed-hairy over surface of lamina; heads 7–9-flowered (N.S.W.)"	"Acacia clunies-rossiae"
910	"Phyllodes acute or short-acuminate with delicate, curved points; funicle 1/2 to wholly encircling seed"	911
910	"Phyllode apices not as above"	912
911	"Phyllodes linear to linear-oblanceolate, l:w > 10 (S.A., N.S.W., Vic.)"	"Acacia calamifolia"
911	"Phyllode characters not combined as above (SW W.A.)"	"Acacia leptopetala"
912	"Bracteoles dark brown to black, white-fimbriolate; phyllodes 7–12 cm long, narrowly oblanceolate; peduncles 3–6 mm long; funicle encircling seed (N.S.W.)"	"Acacia gladiiformis"
912	"Bracteoles not as above; other characters not combined as above"	913
913	"Phyllodes not more than 7 cm long"	914
913	"Phyllodes some or all > 7 cm long"	916
914	"Funicle encircling seed; bracteoles golden-fimbriolate; phyllodes narrowly oblanceolate; gland obscure (SW W.A.)"	"Acacia leptopetala"
914	"Funicle not encircling seed; bracteoles not golden-fimbriolate; phyllodes normally narrowly linear; gland sometimes exserted (Qld, N.S.W.)"	915
915	"Gland absent or > 6 mm above pulvinus"	"Acacia betchei"
915	"Gland 1–6 mm above pulvinus"	"Acacia fimbriata"
916	"Pods 5–7 mm wide, blackish; funicle arillate; phyllodes eglandular at apex; heads 12–25-flowered (temperate Qld, N.S.W.)"	"Acacia betchei"
916	"Pods 7–13 mm wide, commonly yellow-brown; funicle exarillate; phyllodes with a small gland at base of apical mucro; heads often with more than 25 flowers (arid or semi-arid areas)"	917
917	"Phyllodes linear-oblanceolate, thickly coriaceous, 3–8 mm wide; branchlets not pruinose; peduncles 10–20 mm long; seeds longitudinal (W.A.)"	"Acacia gelasina"
917	"Phyllodes narrowly linear to narrowly elliptic OR if linear-oblanceolate then other characters not combined as above"	918
918	"Gland 3–7 mm above pulvinus; phyllodes c. 2 mm wide; peduncles 10–20 mm long; seeds ±longitudinal in pods (W.A.)"	"Acacia subrigida"
918	"Gland at distal end of pulvinus, rarely absent; peduncles 4–10 (–15) mm long; seeds transverse to oblique in pods"	919
919	"Phyllodes > 1 mm wide (W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia murrayana"
919	"Phyllodes 0.5–1 mm wide (W.A., N.T., S.A.)"	"Acacia pachyacra"
920	"Peduncles and raceme axes completely glabrous"	921
920	"Peduncles and/or raceme axes hairy to some degree (the hairs sometimes sparse and/or confined to apex of peduncles)"	951
921	"Inflorescences 2-headed racemes to 5 mm long; peduncles 7–16 mm long; heads 36–46-flowered; phyllodes narrowly elliptic, 4–8 cm long, 5–10 mm wide; viscid shrub or tree (S.A., ?Vic.)"	"Acacia dodonaeifolia"
921	"Characters not combined as above (plants not viscid)"	922
922	"Funicle 1/2 to wholly encircling seed (S.A., N.S.W., Vic., Tas.)"	923
922	"Funicle not encircling seed"	932
923	"Phyllodes narrowly elliptic to oblanceolate, acute to acuminate, 20–55 × 4–10 mm; heads ±loosely 8–15-flowered with spreading, often subacute buds (S.A.)"	"Acacia quornensis"
923	"Phyllodes and heads not as above"	924
924	"Phyllodes 0.8–2 mm wide, narrowly linear"	925
924	"Phyllodes some or all > 2 mm wide, infrequently narrowly linear"	926
925	"Phyllodes narrowed to short, ±straight, erect points; heads 12–20-flowered (N.S.W.)"	"Acacia subulata"
925	"Phyllodes narrowed to long, delicately curved points; heads 25–40-flowered (S.A., N.S.W., Vic.)"	"Acacia calamifolia"
926	"Phyllodes < 7 cm long, usually narrowly oblanceolate"	927
926	"Phyllodes some or all > 7 cm long"	930
927	"Phyllodes uncinate or gradually narrowed at apex into long, delicately curved points"	928
927	"Phyllodes not as above (N.S.W.)"	929
928	"Racemes to c. 5 mm long and 1–4 (–5)-headed (S.A., Vic.: mostly inland areas)"	"Acacia calamifolia"
928	"Racemes 7–25 mm long and 4–12-headed (S.A., Vic., Tas.: coastal habitats)"	"Acacia retinodes"
929	"Phyllodes obtuse, 25–55 × 4–10 mm"	"Acacia chalkeri"
929	"Phyllodes acute to acuminate, 50–90 × 2–5 mm"	"Acacia flocktoniae"
930	"Heads 30–50-flowered, pale yellow; phyllodes 7–22 cm long (S.A., Vic.)"	"Acacia retinodes"
930	"Heads 20–35-flowered; phyllodes 5–10 cm long (N.S.W.)"	931
931	"Heads creamy white or bright yellow; phyllodes normally gradually narrowed to acute or acuminate apices"	"Acacia flocktoniae"
931	"Heads golden; phyllodes often abruptly narrowed to acute apices"	"Acacia forsythii"
932	"Phyllode glands either prominently raised and exserted above margin and/or obviously swollen within lamina (Qld, N.S.W., Vic.)"	933
932	"Phyllode glands not or scarcely raised above the margin and not swollen within the lamina, occasionally absent"	942
933	"Gland 1–6 mm above pulvinus; phyllodes 2–5 (–7) cm long, 2–5 mm wide, glabrous or with margins appressed-hairy; heads normally bright golden (Qld, N.S.W.)"	"Acacia fimbriata"
933	"Gland and phyllode characters not combined as above"	934
934	"Heads 7–12-flowered"	935
934	"Heads some or all with more than 12 flowers"	938
935	"Phyllodes not narrowly linear; heads golden (N.S.W., Vic.)"	"Acacia kettlewelliae"
935	"Phyllodes narrowly linear"	936
936	"Phyllodes 4–8 cm long, 1–1.6 mm wide; peduncles 2–4 mm long; heads commonly lime-yellow (Qld)"	"Acacia fimbriata"
936	"Phyllodes longer and/or wider than above; peduncles 3.5–9 mm long"	937
937	"Heads golden; gland slightly exserted; pods 11–12 mm wide (Qld, N.S.W.)"	"Acacia adunca"
937	"Heads cream; gland prominently exserted; pods 8–9 mm wide (N.S.W.)"	"Acacia floydii"
938	"Phyllodes 4–8 cm long, 4–8 mm wide, with 2 or 3 prominent glands; heads pale yellow; pods 8–10 mm wide (Qld)"	"Acacia semirigida"
938	"Characters not combined as above (heads normally golden)"	939
939	"Pods 11–12 mm wide; phyllodes uncinate to subuncinate, 1.5–2.5 mm wide; gland slightly exserted (Qld, N.S.W.)"	"Acacia adunca"
939	"Pods 5–7.5 mm wide; phyllode characters not combined as above; gland clearly exserted, or sometimes absent"	940
940	"Phyllode 2–3 mm wide; glands small but exserted (not pustular), or commonly absent; bipinnate leaves not retained as below (Qld, N.S.W.)"	"Acacia betchei"
940	"Phyllodes commonly > 3 mm wide; glands pustular; bipinnate leaves retained until plant 2–3 m high or may persist on lower branches of mature plants"	941
941	"Gland 1–1.5 mm long and with a large, central pore, often connected to midrib by a fine oblique nerve (Qld)"	"Acacia pustula"
941	"Gland normally < 1 mm long and with a small, acentral pore, not or rarely connected to midrib by a fine oblique nerve (N.S.W.)"	"Acacia linearifolia"
942	"Heads 5–12-flowered; phyllodes not more than 6 cm long; peduncles 2–5 mm long (N.S.W., Vic.)"	943
942	"Characters not combined as above"	945
943	"Heads creamy yellow; pods 7–13 mm wide (N.S.W.)"	"Acacia linifolia"
943	"Heads golden"	944
944	"Petals 1-nerved; pods c. 10 mm wide; heads 9–15-flowered (N.S.W.)"	"Acacia hamiltoniana"
944	"Petals ±nerveless; pods 4–6 mm wide; heads 5–10-flowered (N.S.W., Vic.)"	"Acacia boormanii"
945	"Peduncles constricted at apex to a narrow receptacle; phyllodes thick, longitudinally wrinkled when dry; heads cream (SW W.A.)"	"Acacia crassiuscula"
945	"Peduncles and phyllodes not as above (not SW W.A. except sometimes A. hakeoides)"	946
946	"Pods 8–12 mm wide"	947
946	"Pods 3–7 mm wide"	949
947	"Phyllodes 3–8 cm long; gland < 10 mm above pulvinus; heads golden (N.S.W.)"	"Acacia hamiltoniana"
947	"Phyllodes some or all > 8 cm long; gland 10–40 mm above pulvinus"	948
948	"Heads golden; phyllodes 1.5–2.5 mm wide, uncinate to subuncinate (Qld, N.S.W.)"	"Acacia adunca"
948	"Heads creamy yellow; phyllodes 2–5 mm wide, not uncinate (Qld)"	"Acacia acrionastes"
949	"Peduncles slender, 3–8 mm long; bracteoles light brown, not very evident in mature buds; pods linear and not constricted between seeds (N.S.W.)"	"Acacia betchei"
949	"Peduncles ±stout, 2–5 mm long, drying dark brown to blackish; bracteoles dark brown to black and evident in mature buds; pods often ±moniliform"	950
950	"Phyllodes green, 3 mm or more wide; heads 20–27 (–35)-flowered (SW W.A., S.A., Qld, N.S.W., Vic.)"	"Acacia hakeoides"
950	"Phyllodes glaucous, 1.5–3 mm wide; heads 15–20-flowered (Vic.)"	"Acacia williamsonii"
951	"Peduncles with minute, patent hairs; bipinnate leaves normally persistent with the phyllodes; subshrubs 0.3–0.6 m high (SW W.A.)"	"Acacia insolita"
951	"Peduncles appressed-hairy or glabrous; bipinnate leaves usually not persistent with phyllodes; tall shrubs or trees"	952
952	"Racemes to 5 mm long; peduncles 4–12 mm long, not bright golden-hairy; phyllodes 25–55 mm long, linear-oblanceolate or narrowly elliptic, commonly with delicate, curved to uncinate points (S.A., Vic.)"	"Acacia × grayana"
952	"Characters not combined as above"	953
953	"Phyllode glands either clearly raised above the margin and/or prominently swollen within the lamina"	954
953	"Phyllode glands not or scarcely raised above the margin and not prominently swollen within the lamina"	958
954	"Phyllodes narrowly linear, 1–3 (–5) mm wide, glabrous or hairs ±confined to midrib, some or all > 7 cm long"	955
954	"Phyllode characters not combined as above"	956
955	"Phyllodes with midrib appressed-puberulous (N.S.W.)"	"Acacia ingramii"
955	"Phyllodes glabrous (Qld)"	"Acacia angusta"
956	"Phyllodes with appressed hairs covering entire lamina or occurring in patches, rarely glabrous, usually 6–15 cm long; heads 20–35-flowered; glands ±pustular (Qld, N.S.W.)"	"Acacia neriifolia"
956	"Phyllodes not more than 7 cm long, glabrous or appressed-hairy on margins; heads 8–20-flowered; glands not pustular"	957
957	"Branchlets hairy on ribs or glabrous; phyllodes appressed-hairy on margins or glabrous, dark green; pods 5–9 mm wide (Qld, N.S.W.)"	"Acacia fimbriata"
957	"Branchlets glabrous; phyllodes glabrous, green to glaucous; pods 8–14 mm wide (N.S.W., Vic.)"	"Acacia kettlewelliae"
958	"Phyllodes less then 6 cm long; racemes about as long as phyllodes or longer"	959
958	"Phyllodes > 6 cm long OR if not then other characters not combined as in leads 57 and 58 above"	960
959	"Heads 4–8-flowered; peduncles hairy to subglabrous (N.S.W.)"	"Acacia meiantha"
959	"Heads 15–30-flowered; peduncles golden-hairy; funicle not encircling seed (Qld, N.S.W., Vic.)"	"Acacia decora"
960	"Branchlets and/or phyllodes hairy to some degree; raceme axes and peduncles never golden-hairy; heads 8–20-flowered; funicle not encircling seed (Qld, N.S.W., Vic.)"	961
960	"Branchlets and phyllodes completely glabrous"	965
961	"Heads white or cream; phyllodes narrowly linear, 5–8 cm long, 2–3 mm wide, hairs mostly confined to midribs (Qld)"	"Acacia pubicosta"
961	"Heads lemon yellow to golden; phyllode characters not combined as above"	962
962	"Ovary densely tomentose; branchlets often lightly pruinose; phyllodes glaucous to subglaucous, moderately appressed-hairy to glabrous; pods 8–10 mm wide (N.S.W.)"	"Acacia caesiella"
962	"Ovary glabrous; other characters not combined as above"	963
963	"Gland 1–6 mm above pulvinus; phyllodes dark green, appressed-hairy on margins or glabrous, mostly 20–50 long and 2–5 mm long (N.S.W., Qld)"	"Acacia fimbriata"
963	"Characters not combined as above"	964
964	"Phyllodes moderately to densely appressed-puberulous; pods 8–10 mm wide; seeds longitudinal (Qld)"	"Acacia polifolia"
964	"Phyllodes glabrous or sparsely hairy; pods 10–20 mm wide; seeds mostly transverse to oblique (N.S.W., Vic.)"	"Acacia kybeanensis"
965	"Flowering peduncles, raceme axes OR bracteole margins with bright golden hairs; funicle partially to wholly encircling seed"	966
965	"Flowering peduncles, raceme axes and bracteole margins with white or very pale yellow hairs or glabrous"	970
966	"Pods 4–4.5 mm wide, ±moniliform; heads 30–40-flowered (S.A., ?N.S.W.)"	"Acacia rivalis"
966	"Pods > 4 mm wide and/or not moniliform; heads often less than 30-flowered (SW W.A.)"	967
967	"Pods 12–22 mm wide; phyllodes commonly narrowly linear and ±straight"	"Acacia aestivalis"
967	"Pods 4–8 mm wide"	968
968	"Heads 2–3 mm diam.; peduncles 2–4 mm long; phyllodes often shallowly incurved"	"Acacia chrysella"
968	"Heads 5–8 mm diam.; peduncles often > 4 mm long; phyllodes straight to shallowly incurved"	969
969	"Phyllodes 4–8 mm wide (N of Perth, W.A.)"	"Acacia brumalis"
969	"Phyllodes 2–5 mm wide (S of Perth, W.A.)"	"Acacia chamaeleon"
970	"Phyllodes mostly 20–50 × 2–5 mm; gland 1–6 mm above pulvinus; funicle not encircling seed (N.S.W., Qld)"	"Acacia fimbriata"
970	"Characters not combined as above"	971
971	"Heads cream or lemon-yellow; phyllodes uncinate; pods 5–6 (–9) mm wide; funicle 1/2–3/4-encircling seed (SW W.A.)"	"Acacia harveyi"
971	"Heads golden; phyllodes normally not uncinate"	972
972	"Pods 11–14 mm wide; phyllodes acuminate with delicate, mostly incurved tips; funicle not encircling seed (N.S.W.)"	"Acacia macnuttiana"
972	"Pods < 10 mm wide; phyllode apices not as above"	973
973	"Funicle not encircling seed; peduncles drying dark reddish brown to blackish, sparsely white-hairy; bracteoles dark brown to black, white fimbriolate and evident in buds"	974
973	"Funicle 1/2 to wholly encircling seed; peduncle and bracteole characters normally not combined as above (SW W.A.)"	975
974	"Phyllodes green, 3 mm or more wide; heads 20–27 (–35)-flowered; pods 4–6 mm wide (SW W.A., S.A., Qld, N.S.W., Vic.)"	"Acacia hakeoides"
974	"Phyllodes glaucous, 1.5–3 mm wide; heads 15–20-flowered; pods 3–3.5 mm wide (Vic.)"	"Acacia williamsonii"
975	"Phyllodes 4–8 mm wide (N of Perth, W.A.)"	"Acacia brumalis"
975	"Phyllodes 2–5 mm wide (S of Perth, W.A.)"	"Acacia chamaeleon"
976	"Branchlets velvety-villous; phyllodes 12–17 × 3.5–6 cm, indumentum as on branchlets but sometimes sparse (Qld)"	"Acacia holotricha"
976	"Characters not combined as above"	977
977	"Phyllodes tomentulose to velvety-pubescent with an indumentum of distinct, spreading hairs (very rarely glabrous in A. podalyriifolia but then phyllodes with l:w 1.5–2.5)"	978
977	"Phyllodes glabrous or with indumentum of appressed hairs, l:w normally > 2.5"	980
978	"Heads obloid; branchlet hairs crisped; pods with reddish brown hairs (N.S.W., Vic.)"	"Acacia lucasii"
978	"Heads globular; branchlet hairs ±straight; pods with white hairs"	979
979	"Branchlets not pruinose; phyllodes with l:w normally 3–5; gland 1–5 mm above pulvinus; pods 6–10 mm wide (Qld)"	"Acacia uncifera"
979	"Branchlets pruinose; phyllodes with l:w = 1.5–2.5; gland 8–18 mm above pulvinus; pods 15–25 mm wide (Qld, N.S.W.)"	"Acacia podalyriifolia"
980	"Peduncles golden-hairy, 3–6 mm long; racemes 3–6 (–12) cm long, about as long as phyllodes or longer; phyllodes 2–6 cm long, 2–10 mm wide (Qld, N.S.W., Vic.)"	"Acacia decora"
980	"Characters not combined as above"	981
981	"Phyllodes densely sericeous with silvery blue-grey hairs covering entire surface (greenish yellow on new shoots), oblanceolate, 2.5–5 (–6) cm long; racemes normally 4–10 mm long (S.A., Vic.)"	"Acacia argyrophylla"
981	"Characters not combined as above"	982
982	"Phyllodes (mature) appressed-hairy on surface of lamina (hairs sometimes sparse and minute: observe carefully at ×10 mag.)"	983
982	"Phyllodes (mature) glabrous or with hairs confined to base, margins or midribs"	990
983	"Heads obloid, 20–40-flowered"	984
983	"Heads globular"	985
984	"Branchlet hairs straight and closely appressed; phyllodes 5–8 cm long; pod hairs silvery white (N.S.W.)"	"Acacia dorothea"
984	"Branchlet hairs crisped and spreading; phyllodes 1.5–3 (–6) cm long; pod hairs reddish brown (N.S.W., Vic.)"	"Acacia lucasii"
985	"Sepals free; heads 7–9-flowered; ovary glabrous; gland submerged and swollen within lamina in a ±pouch-like fashion (N.S.W.)"	"Acacia clunies-rossiae"
985	"Sepals united; heads commonly with more than 9 flowers and/or ovary pubescent; gland not as above"	986
986	"Phyllodes with 1–3 pustular glands; heads 20–25-flowered (Qld, N.S.W.)"	"Acacia neriifolia"
986	"Phyllodes with a single, non-pustular gland; heads 8–20-flowered"	987
987	"Ovary glabrous"	988
987	"Ovary densely pubescent (N.S.W.)"	989
988	"Indumentum on new shoots, raceme axes and often peduncles light golden; heads 15–20-flowered; pods 8–10 mm wide (Qld)"	"Acacia polifolia"
988	"Indumentum on new shoots, raceme axes and peduncles white; heads 8–15-flowered; pods 10–20 mm wide (N.S.W., Vic.)"	"Acacia kybeanensis"
989	"Phyllodes 7.5–11.5 mm wide, with minute hairs (< 0.1 mm long); gland often connected to midrib by a fine nerve; pods 10–11 mm wide"	"Acacia barringtonensis"
989	"Phyllodes normally 3–6 mm wide, with distinct hairs (0.1–0.2 mm long); gland not as above (except Mt Coricudgy populations which may also have phyllodes to 12 mm wide); pods 8–10 mm wide"	"Acacia caesiella"
990	"Plants viscid; racemes not more than 5 mm long; peduncles 7–16 mm long, glabrous; sepals united; funicle arillate and not encircling seed (S.A., ?Vic.)"	"Acacia dodonaeifolia"
990	"Plants not viscid; other characters not combined as above"	991
991	"Heads creamy white, 15–20-flowered; phyllodes much-narrowed at base, falcate, broadest above middle, 7–19 × 1–4 cm; gland 0–5 mm above pulvinus, not connected to midrib by a nerve; peduncles appressed-hairy (Qld, N.S.W.)"	"Acacia falcata"
991	"Characters not combined as above"	992
992	"Sepals free or almost so; glands not pustular; funicle sometimes exarillate"	993
992	"Sepals united for 1/4 or more their length OR if free then glands pustular; funicle always arillate"	1000
993	"Peduncles 1.5–6 mm long; bracteoles dark brown to black, white-fimbriolate; phyllodes oblanceolate to narrowly oblanceolate, coriaceous; lowermost gland 0–5 mm above pulvinus (N.S.W.)"	994
993	"Characters not combined as above (not N.S.W., except A. murrayana)"	995
994	"Phyllodes 3–6 × 0.9–1.4 cm, with 1–3 marginal glands"	"Acacia kydrensis"
994	"Phyllodes 7–12 × 0.5–1.2 cm, with 3–6 marginal glands"	"Acacia gladiiformis"
995	"Pods 4–6 mm wide; funicle arillate, 1/2 to wholly encircling seed (SW W.A.)"	996
995	"Pods 8–23 mm wide; funicle ±exarillate, not encircling seed"	997
996	"Phyllodes some or all with l:w > 3, normally 20–55 mm long, 3–11 mm wide, narrowly elliptic to oblanceolate (never ovate)"	"Acacia leptopetala"
996	"Phyllodes with l:w = 1.5–3, 16–35 mm long, 8–17 mm wide, normally elliptic to ovate"	"Acacia merrickiae"
997	"Phyllodes linear-oblanceolate, 4–10 cm long, 3–8 mm wide, subrigid, coriaceous; branchlets not pruinose; peduncles 10–20 mm long; shrub 1–2.5 m high (W.A.)"	"Acacia gelasina"
997	"Characters not combined as above; tall shrubs or trees"	998
998	"Racemes 10–60 mm long; peduncles 4–10 (–15) mm long; phyllodes with small gland at base of apical mucro (arid zone: W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia murrayana"
998	"Racemes to 10 (–15) mm long, sometimes appearing as axillary clusters; peduncles 10–20 mm long; phyllode apices eglandular (Qld)"	999
999	"Phyllodes 7–20 (–35) mm wide; basal gland < 1 mm long; seeds ±longitudinal"	"Acacia fasciculifera"
999	"Phyllodes 3–8 mm wide; basal gland 1–2 mm long; seeds transverse"	"Acacia crombiei"
1000	"Seeds transverse in pods AND encircled by funicles; pods 8–17 mm wide; heads 25–40-flowered; phyllodes glabrous, 6–13 cm long, 8–25 mm wide (S.A., SW N.S.W., NW Vic.)"	1001
1000	"Seeds longitudinal in pods OR if transverse then not encircled by funicles"	1002
1001	"Phyllodes thin, green; heads pale yellow (S.A.)"	"Acacia alcockii"
1001	"Phyllodes thick, grey-green to glaucous; heads golden (S.A., N.S.W., Vic.)"	"Acacia notabilis"
1002	"Heads more than 30-flowered (best counted in mature bud)"	1003
1002	"Heads 5–30-flowered (best counted in mature bud)"	1021
1003	"Glands prominently swollen within or clearly exserted beyond margins; phyllodes 3–12 mm wide, l:w = 7–30; peduncles and raceme axes often appressed-hairy (Qld, N.S.W.)"	"Acacia neriifolia"
1003	"Characters not combined as above"	1004
1004	"Pods 4–7 mm wide"	1005
1004	"Pods 8–17 mm wide"	1014
1005	"Peduncles and/or raceme axes hairy to some degree (the hairs minute, sometimes sparse and confined to apex of peduncles)"	1006
1005	"Peduncles and raceme axes completely glabrous"	1008
1006	"Peduncles thick (c. 1.5 mm diam.), coarsely longitudinally grooved; heads 50–140-flowered; funicle not encircling seed (S.A., N.S.W.)"	"Acacia beckleri"
1006	"Peduncles not as above; heads less than 50-flowered; funicle 3/4 to wholly encircling seed (SW W.A.)"	1007
1007	"Phyllodes glaucous to subglaucous (E of Perth, W.A.)"	"Acacia brumalis"
1007	"Phyllodes dark green (S of Perth, W.A.)"	"Acacia chamaeleon"
1008	"Branchlets obviously flexuose, pendulous or subpendulous, not pruinose; phyllodes normally much-narrowed at base"	1009
1008	"Branchlets not as above"	1010
1009	"Stipules persistent; peduncles 3–6 mm long; phyllodes with prominent lateral nerves (Qld)"	"Acacia macradenia"
1009	"Stipules caducous; peduncles 10–20 mm long; phyllodes with obscure lateral nerves (S.A.)"	"Acacia gillii"
1010	"Funicle not encircling seed; phyllodes attenuate at base, commonly falcate; pulvinus 4–7 mm long; peduncles stout; branchlets terete, (S.A., N.S.W., A.C.T., Vic., often naturalised elsewhere)"	"Acacia pycnantha"
1010	"Funicle 1/2 to wholly encircling seed; other characters normally not combined as above"	1011
1011	"Phyllodes acute to acuminate, 7–22 cm long, 3–15 mm, l:w normally > 10; heads pale yellow; branchlets infrequently pruinose, flattened or angular (S.A., Vic.)"	"Acacia retinodes"
1011	"Phyllodes obtuse, 7–13 cm long, 9–40 mm wide, l:w < 10; heads normally golden; branchlets normally pruinose"	1012
1012	"Phyllodes with a single gland 0–4 mm above pulvinus; peduncles 4–11 mm long; bracteoles glabrous, pale coloured and not prominent in buds (southern S.A.)"	"Acacia cretacea"
1012	"Phyllodes with (1–) 2–4 glands along the upper margin, the lowermost near pulvinus; peduncles 2–6 mm long; bracteoles white-fimbriolate or dark brown and rather evident in buds"	1013
1013	"Heads 40–80-flowered; phyllodes with 1 or 2 glands (arid zone: W.A., N.T., S.A.)"	"Acacia validinervia"
1013	"Heads 30–40-flowered; phyllodes with 3 or 4 glands (SW W.A.)"	"Acacia steedmanii"
1014	"Bipinnate leaves commonly persisting with phyllodes; branchlets not pruinose; phyllodes 10–14 cm long, 7–16 mm wide, attenuate at base, normally obtuse; heads cream (N.S.W., Qld)"	"Acacia attenuata"
1014	"Bipinnate leaves not persistent; other characters not combined as above"	1015
1015	"Phyllodes acuminate to acute, 5–12 mm wide (to 25 mm at base of branches in A. confluens); peduncles 6–25 mm long"	1016
1015	"Phyllodes obtuse or retuse, usually 10–80 mm wide; peduncles 1.5–8 mm long"	1018
1016	"Phyllodes 15–25 cm long; petals hairy (northern W.A.)"	"Acacia kenneallyi"
1016	"Phyllodes 6–14 cm long; petals glabrous"	1017
1017	"Heads 20–32-flowered; pods firmly chartaceous (N.S.W.)"	"Acacia saliciformis"
1017	"Heads 40–60-flowered; pods thickly coriaceous to subwoody (S.A.)"	"Acacia confluens"
1018	"Branchlets stout, angled; pulvinus 1–2 mm long; bracteoles golden-fimbriolate (SW W.A.)"	"Acacia splendens"
1018	"Branchlets terete; pulvinus (3–) 5–7 mm long; bracteoles not golden-fimbriolate"	1019
1019	"Phyllodes with a central midrib; heads 40–80-flowered; pods 5–10 mm wide (arid zone: W.A., N.T., S.A.)"	"Acacia validinervia"
1019	"Phyllodes with midrib situated towards upper margin; heads 25–40-flowered; pods 9–25 mm wide (not arid zone)"	1020
1020	"Basal gland 0–4 mm above pulvinus, with pore narrow and elongated (often slit-like); peduncles 5–8 mm long; funicle encircling seed (Qld)"	"Acacia bancroftiorum"
1020	"Basal gland not as above; peduncles 1.5–5 mm long, stout; funicle not encircling seed (N.S.W., A.C.T., Vic.)"	"Acacia obliquinervia"
1021	"Pods not more than 7 mm wide"	1022
1021	"Pods some or all > 7 mm wide"	1037
1022	"Pulvinus 9–12 mm long; phyllodes attenuate at base, falcate, 10–13 cm long, 15–22 mm wide (S.A.)"	"Acacia leiophylla"
1022	"Pulvinus < 9 mm long"	1023
1023	"Phyllodes normally drying reddish at least on margins and midrib; bipinnate leaves often persistent with phyllodes; gland 10–40 mm above pulvinus; peduncles glabrous; funicle encircling seed (Qld, N.S.W., A.C.T., Vic.)"	"Acacia rubida"
1023	"Phyllodes not drying reddish; other characters not combined as above"	1024
1024	"Gland ±pustular (i.e. large and swollen, with a thickened rim projecting beyond the margin), commonly more than 1 gland along margin"	1025
1024	"Gland not pustular (not or scarcely projecting beyond margin)"	1027
1025	"Heads 6–12-flowered; phyllodes oblanceolate, 3–8 cm long, 5–17 mm wide; funicle encircling seed (N.S.W., Vic.)"	"Acacia amoena"
1025	"Heads more than 12-flowered; phyllodes linear to narrowly elliptic, often > 8 cm long; funicle not encircling seed"	1026
1026	"Branchlets, peduncles, raceme axes and ovary glabrous; gland 15–55 mm above pulvinus"	"Acacia pustula"
1026	"Branchlets, peduncles, raceme axes or ovary hairy to some degree; gland not more than 20 mm above pulvinus"	"Acacia neriifolia"
1027	"Racemes about as long as phyllodes or longer; phyllodes 1.5–5 cm long, obtuse to subacute"	1028
1027	"Racemes clearly shorter than phyllodes"	1029
1028	"Phyllodes 10–15 (–20) mm wide (S.A.)"	"Acacia wattsiana"
1028	"Phyllodes 4–8 mm wide (Qld, N.S.W.)"	"Acacia buxifolia"
1029	"Funicle not encircling seed; gland 10–45 mm above pulvinus; peduncles ±glabrous, stout, drying dark brown to blackish; bracteoles blackish, white-fimbriolate; branchlets terete (SW W.A., S.A., Qld, N.S.W., Vic.)"	"Acacia hakeoides"
1029	"Characters not combined as above (funicle normally partially or wholly encircling seed)"	1030
1030	"Peduncles and raceme axes glabrous (not SW W.A., except A. jennerae)"	1031
1030	"Peduncles and/or raceme axes appressed-puberulous, with hairs sometimes sparse and confined to peduncle apices"	1034
1031	"Phyllodes uncinate to subuncinate, 3–6.5 mm long, 3–10 mm wide (S.A., Vic., Tas.: coastal habitats)"	"Acacia retinodes"
1031	"Phyllodes not as above (inland habitats)"	1032
1032	"Phyllodes normally acuminate, 5–11 cm long, 5–15 (–24) mm wide; glands (1–) 2 or 3; branchlets terete (W.A., N.T., S.A., N.S.W.)"	"Acacia jennerae"
1032	"Phyllodes obtuse, 2.5–7 cm long, 3–12 mm wide; gland 1; branchlets angled at apices"	1033
1033	"Phyllodes obtuse-mucronulate; heads densely 18–23-flowered (N.S.W.)"	"Acacia chalkeri"
1033	"Phyllodes rounded-obtuse, with mucro normally absent; heads subdensely 12–20-flowered (S.A.)"	"Acacia wattsiana"
1034	"Pods linear, 4–6 mm wide; phyllodes ±straight, obtuse to acute, 5–12 mm wide (SW W.A.)"	1035
1034	"Pods moniliform to submoniliform, 6–8 mm wide; phyllodes normally falcately recurved and/or acuminate, 5–25 mm wide"	1036
1035	"Gland 10–30 mm above pulvinus (N of Perth, W.A.)"	"Acacia brumalis"
1035	"Gland normally 3–10 mm above pulvinus (S of Perth, W.A.)"	"Acacia chamaeleon"
1036	"Phyllodes ±straight; glands (1–) 2 or 3 along upper margin, the lowermost 1–10 mm above pulvinus; heads light golden (mostly arid zone: W.A., N.T., S.A., N.S.W.)"	"Acacia jennerae"
1036	"Phyllodes normally falcately recurved, with a single gland along upper margin 5–30 mm above pulvinus; heads cream or golden (SW W.A.)"	"Acacia microbotrya"
1037	"Phyllodes 9–22 × 2.5–8 (–16) cm, much-narrowed at base; pulvinus 5–12 mm long; gland 0–4 mm above pulvinus, not connected to midrib by a fine nerve, the pore narrow and elongated; funicle encircling seed (Qld)"	"Acacia bancroftiorum"
1037	"Characters not combined as above"	1038
1038	"Heads white, cream or very pale yellow"	1039
1038	"Heads golden or bright lemon yellow"	1045
1039	"Phyllodes with 2 or 3 rather prominent glands along upper margin, 4–8 cm long, 4–8 mm wide (Qld)"	"Acacia semirigida"
1039	"Phyllodes with a single marginal gland, normally larger than above"	1040
1040	"Bipinnate leaves commonly persisting with phyllodes; gland 1–5 mm above pulvinus, not connected to midrib by a nerve; pods 13–15 mm wide (N.S.W., Qld)"	"Acacia attenuata"
1040	"Bipinnate leaves not persistent; gland 5–30 mm above pulvinus"	1041
1041	"Pods 6–8 mm wide, moniliform to submoniliform; gland not connected to midrib by a nerve; peduncles 3–5 mm long, appressed-puberulous (SW W.A.)"	"Acacia microbotrya"
1041	"Pods not as above; gland often connected to midrib by a fine oblique nerve; peduncles commonly longer and/or glabrous (Qld, N.S.W., A.C.T., Vic.)"	1042
1042	"Peduncles glabrous; phyllodes narrowly elliptic to lanceolate, acuminate, ±straight, l:w = 6–14, grey-green (N.S.W.)"	"Acacia saliciformis"
1042	"Peduncles hairy OR if glabrous then other characters not combined as above"	1043
1043	"Funicle encircling seed; pods 9–11 mm wide; peduncles normally with ±spreading, golden or white hairs; heads 17–20-flowered (N.S.W.)"	"Acacia mabellae"
1043	"Funicle not encircling seed; other characters not combined as above (Qld, N.S.W., A.C.T., Vic.)"	1044
1044	"Pods 10–17 mm wide; peduncles glabrous or white appressed-puberulous; phyllodes straight or falcate"	"Acacia penninervis"
1044	"Pods 15–25 mm wide; peduncles appressed-puberulous with usually yellow hairs; phyllodes usually falcate"	"Acacia falciformis"
1045	"Bipinnate leaves persisting with phyllodes AND/OR phyllodes normally drying reddish (at least on their margins or midribs); heads 10–20-flowered"	1046
1045	"Bipinnate leaves not persisting with phyllodes; phyllodes not drying reddish"	1047
1046	"Phyllodes (rarely developed) < 10 mm wide, 6–9 cm long, ±straight, linear-oblanceolate; gland 10–15 mm above pulvinus (Qld, N.S.W.)"	"Acacia latisepala"
1046	"Phyllode characters normally not combined as above (Qld, N.S.W., A.C.T., Vic.)"	"Acacia rubida"
1047	"Bracteoles golden-fimbriolate; peduncles and raceme axes normally pale yellow or golden appressed-hairy (often glabrous in A. jennerae); funicle normally partially to wholly encircling seed (SW W.A. and arid zone)"	1048
1047	"Bracteoles glabrous or white-fimbriolate (not W.A. or arid zone)"	1051
1048	"Peduncles and raceme axes normally glabrous; phyllodes ±straight, and normally acuminate; glands (1–) 2 or 3, lowermost 1–10 mm above pulvinus (mostly arid zone: W.A., N.T., S.A., N.S.W.)"	"Acacia jennerae"
1048	"Characters not combined as above (SW W.A.)"	1049
1049	"Funicle not more than 1/2-encircling seed; pods 10–22 mm wide; phyllodes < 10 mm wide, ±straight"	"Acacia aestivalis"
1049	"Funicle wholly encircling seed; pods 6–11 mm wide; phyllodes often > 10 mm wide and/or falcate"	1050
1050	"Pods 9–11 mm wide (rare, Shark Bay area)"	"Acacia amblyophylla"
1050	"Pods 6–8 mm wide (common, Murchison R. to Fitzgerald R.)"	"Acacia microbotrya"
1051	"Phyllode glands submerged and swollen within the lamina in a ±pouch-like fashion, with orifice at distal end of gland and usually downward-pointing"	1052
1051	"Phyllode glands not as above"	1053
1052	"Phyllodes with l:w = (2–) 3–6; gland 2–4 mm above pulvinus (Tas.)"	"Acacia pataczekii"
1052	"Phyllodes with l:w = 8–13; gland 4–15 mm above pulvinus (N.S.W., Vic.)"	"Acacia kettlewelliae"
1053	"Phyllode glands 2 or 3 OR if 1 then clearly exserted beyond margin"	1054
1053	"Phyllode gland 1, not or scarcely exserted beyond margin"	1056
1054	"Ovary glabrous; heads 7–16-flowered; phyllodes 3–6 cm × 5–12 mm, l:w = 4–8 (N.S.W.: widely cultivated)"	"Acacia prominens"
1054	"Ovary pubescent; other characters not combined as above"	1055
1055	"Heads 17–20-flowered; branchlets, phyllodes and peduncles glabrous (Vic.)"	"Acacia kettlewelliae"
1055	"Heads 20–35-flowered; branchlets, phyllodes, raceme axes OR peduncles with some hairs (Qld)"	"Acacia neriifolia"
1056	"Branchlets, raceme axes and peduncles appressed-hairy"	1057
1056	"Branchlets, raceme axes and peduncles glabrous or with microscopic, straight patent hairs"	1058
1057	"Ovary densely pubescent (N.S.W.)"	"Acacia caesiella"
1057	"Ovary glabrous (N.S.W., Vic.)"	"Acacia kybeanensis"
1058	"Phyllodes 5–17 × 1.5–5 cm, with midrib clearly excentric (situated towards upper margin); gland 0–12 mm above pulvinus, not connected to midrib by a fine nerve (N.S.W., A.C.T., Vic.)"	"Acacia obliquinervia"
1058	"Characters not combined as above"	1059
1059	"Branchlets pruinose; funicle not encircling seed"	1060
1059	"Branchlets not pruinose; funicle sometimes encircling seed"	1063
1060	"Heads 5–8-flowered; phyllodes 3–5.5 cm long, 5–11 mm wide, l:w = 5–8 (N.S.W.)"	"Acacia covenyi"
1060	"Heads 15–30-flowered; phyllodes 2–8 cm long, 8–30 mm wide, l:w = 2–5"	1061
1061	"Gland connected to pulvinus by a fine, oblique nerve; phyllodes 4–8 cm long, 15–30 mm wide; pods 14–22 mm wide (Vic.)"	"Acacia caerulescens"
1061	"Gland not connected to pulvinus by a nerve; phyllodes 2–6 cm long, 8–20 mm wide; pods 8–10 mm wide"	1062
1062	"Gland 0–3 mm above pulvinus; branchlets hirtellous with microscopic, straight, patent hairs (Qld, N.S.W.)"	"Acacia jucunda"
1062	"Gland 5–22 mm above pulvinus; branchlets usually glabrous (Qld)"	"Acacia everistii"
1063	"Heads ±loosely 8–15-flowered with spreading, often subacute buds; phyllodes acute to acuminate; funicle encircling seed (S.A.)"	"Acacia quornensis"
1063	"Heads densely 15–30-flowered, with obtuse buds; phyllodes commonly obtuse"	1064
1064	"Funicle encircling seed; branchlets acutely angled at extremities; pods 6–8 mm wide (S.A.)"	"Acacia wattsiana"
1064	"Funicle not encircling seed; other char-acters not combined as above (not S.A.)"	1065
1065	"Phyllodes oblanceolate to narrowly oblanceolate, 4–11 cm long, 5–16 mm wide, l:w = 5–13 (N.S.W.)"	"Acacia obtusata"
1065	"Phyllode characters not combined as above (l:w = 2–5)"	1066
1066	"Seeds transverse in pods; phyllodes obovate to oblanceolate; peduncles 4–7 mm long (Vic.)"	"Acacia sporadica"
1066	"Seeds longitudinal in pods; phyllodes elliptic to obovate; peduncles 3–4 mm long (Qld)"	"Acacia everistii"
1067	"Bipinnate foliage persistent with phyllodes; plants 0.3–1.2 m high (SW W.A.)"	"Acacia insolita"
1067	"Bipinnate foliage not persistent"	1068
1068	"Flowers (3 or) 4-merous (not N.T. or Qld)"	1069
1068	"Flowers 5-merous"	1110
1069	"Branchlets spinose or subspinose AND phyllodes innocuous, 4–12 long, 0.5–4 mm wide and not triangular (SW W.A.)"	1070
1069	"Branchlets not spinose"	1071
1070	"Phyllodes < 1 mm wide; heads 6- or 7-flowered; pods coiled"	"Acacia pulviniformis"
1070	"Phyllodes 2–4 mm wide; heads 12–22-flowered; pods not coiled"	"Acacia erinacea"
1071	"Phyllodes either continuous with branchlets or very few and scattered, 1–4 mm wide, not triangular; petals flabellate-striate (SW W.A.)"	1072
1071	"Phyllode characters not combined as above; petals normally nerveless or 1-nerved"	1073
1072	"Phyllodes not continuous with branchlets, innocuous, few and scattered"	"Acacia aemula"
1072	"Phyllodes continuous with branchlets, pungent"	"Acacia stenoptera"
1073	"Phyllodes linear to linear-elliptic or linear-oblanceolate (never triangular) AND not sharply pungent, 1–8 mm wide"	1074
1073	"Phyllode characters not combined as above"	1077
1074	"Heads on peduncles 8–15 mm long, globular, white to cream; phyllodes (6–) 9–15 cm long, 3–8 mm wide (SW W.A.)"	"Acacia veronica"
1074	"Heads ±sessile, golden, often shortly obloid"	1075
1075	"Phyllodes with a very prominent, broad (c. 0.5 mm wide), flat-topped midrib, with marginal nerves similar (SW W.A.)"	"Acacia tetraneura"
1075	"Phyllode midrib not as above"	1076
1076	"Phyllodes 5–11 cm long (N.S.W., Vic.)"	"Acacia phasmoides"
1076	"Phyllodes 2.5–4.5 cm long (SW W.A.)"	"Acacia singula"
1077	"Phyllodes 2.5–11 cm long, 6–40 mm wide, acuminate, with 2 prominent longitudinal nerves on each face; peduncles often clustered in phyllode axils (SW W.A.)"	1078
1077	"Phyllode characters not combined as above"	1079
1078	"Phyllodes 2.5–4 long, 6–10 mm wide, not prominently reticulate; upper margin of phyllode with a prominent gland-angle"	"Acacia scalpelliformis"
1078	"Phyllodes 5–11 cm long, 10–40 mm wide, prominently reticulate between the longitudinal nerves; upper margin of phyllode rounded"	"Acacia urophylla"
1079	"Phyllodes 1.5–5 cm long, 4–30 mm wide, neither triangular nor linear, innocuous OR if pungent then peduncles 10–25 mm long (SW W.A.)"	1080
1079	"Phyllode characters not combined as above"	1085
1080	"Stipules persistent, 1.5–10 mm long; branchlets hairy or glabrous"	1081
1080	"Stipules caducous OR if persistent then < 1 mm long; branchlets glabrous"	1083
1081	"Branchlets pruinose, glabrous; stipules 7–10 mm long"	"Acacia durabilis"
1081	"Branchlets not pruinose, hairy or occasionally glabrous; stipules 1.5–4 mm long"	1082
1082	"Heads 5–9-flowered; peduncles 10–20 mm long"	"Acacia obovata"
1082	"Heads 19–25-flowered; peduncles 4–9 mm long"	"Acacia bracteolata"
1083	"Heads 8–12-flowered, lemon yellow; peduncles 10–25 mm long; phyllodes 1-nerved"	"Acacia heterochroa"
1083	"Heads 3–7-flowered, white or cream; peduncles 4–11 mm long; phyllodes 2-nerved (second nerve often less prominent than midrib)"	1084
1084	"Heads 6- or 7-flowered; peduncles 7–11 mm long; branchlets flattened"	"Acacia disticha"
1084	"Heads 3- or 4-flowered; peduncles 4–7 mm long; branchlets not flattened"	"Acacia pygmaea"
1085	"Phyllodes with a prominently thickened, nerve-like upper margin; branchlets densely retrorsely hairy (SW W.A.)"	"Acacia neorigida"
1085	"Phyllodes and branchlets not as above"	1086
1086	"Phyllodes ±crescent-shaped with a triangular, gland-bearing spur on adaxial margin, the gland overtopped by a short, ±pungent mucro; heads obloid (SW W.A.)"	"Acacia delphina"
1086	"Phyllodes not as above (gland never overtopped by a mucro); heads normally globular"	1087
1087	"Phyllodes with midrib ±centrally situated AND never broadest above middle"	1088
1087	"Phyllodes with midrib situated near lower margin OR if ±central, then phyllodes broadest above middle (SW W.A.)"	1098
1088	"Branchlets pruinose, glabrous, prominently ribbed; phyllodes narrowly elliptic, 10–50 × 4–12 mm (SW W.A.)"	"Acacia nervosa"
1088	"Branchlets and phyllodes not as above"	1089
1089	"Phyllodes linear, 10–35 mm long; branchlets hairy; heads 2–6-flowered; peduncles 1.5–4 mm long (Tas.)"	"Acacia axillaris"
1089	"Characters not combined as above"	1090
1090	"Heads 12–25-flowered; branchlets glabrous, ribbed; phyllodes closely sessile (eastern Aust.)"	1091
1090	"Heads less then 12-flowered OR if not then branchlets hairy; peduncles 1–10 mm long (SW W.A.)"	1092
1091	"Phyllodes narrowly triangular to linear-triangular, viscid (at least when young); branchlets resinous; (S.A., Vic.)"	"Acacia rupicola"
1091	"Phyllodes not as above; branchlets not resinous (S.A., N.S.W., A.C.T., Vic., Tas.)"	"Acacia genistifolia"
1092	"Peduncles glabrous; heads white to pale yellow"	1093
1092	"Peduncles hairy"	1095
1093	"Heads 12–15-flowered; sepals free; phyllodes ascending to erect"	"Acacia imparilis"
1093	"Heads 3–6-flowered; sepals 1/4–1/2-united"	1094
1094	"Phyllodes patent, 2–3 mm wide"	"Acacia hastulata"
1094	"Phyllodes deflexed, 0.5–1 mm wide"	"Acacia inops"
1095	"Heads 4-flowered"	1096
1095	"Heads more than 4-flowered, pale yellow to white"	1097
1096	"Peduncles 5–10 mm long; heads pale yellow"	"Acacia horridula"
1096	"Peduncles 1.5–3 mm long; heads golden"	"Acacia pycnocephala"
1097	"Stipules erect; petals glabrous, nerveless; heads 8–15-flowered"	"Acacia uliginosa"
1097	"Stipules spreading; petals puberulous, 1-nerved; heads 5–8-flowered"	"Acacia semitrullata"
1098	"Heads 2-flowered"	1099
1098	"Heads more than 2-flowered"	1101
1099	"Peduncles 3–8 mm long; heads white or cream; petals ±obscurely 3–7-nerved at apices; buds abruptly acute"	"Acacia biflora"
1099	"Peduncles 0.5–3 mm long; petals 1-nerved"	1100
1100	"Heads golden; buds acute"	"Acacia chrysocephala"
1100	"Heads white to cream; buds attenuate"	"Acacia robiniae"
1101	"Heads 4–6-flowered"	1102
1101	"Heads more than 6-flowered"	1106
1102	"Petals 3–7-nerved at apices; heads creamy white; peduncles 7–12 mm long"	"Acacia phlebopetala"
1102	"Petals 1-nerved; other characters normally not combined as above"	1103
1103	"Peduncles 1–3 mm long; heads 4-flowered"	1104
1103	"Peduncles 3.5–10 mm long; heads 5- or 6-flowered"	1105
1104	"Calyx lobes and bracteoles long-acuminate or aristate; heads cream to pale yellow"	"Acacia mooreana"
1104	"Calyx lobes and bracteoles not as above; heads golden"	"Acacia chrysocephala"
1105	"Phyllodes broadest below middle, acuminate; heads cream to pale yellow"	"Acacia divergens"
1105	"Phyllodes broadest above middle, ±obliquely truncate; heads golden"	"Acacia incrassata"
1106	"Phyllodes broadest near or below middle, acuminate; stipules often spinose"	1107
1106	"Phyllodes broadest above middle, ±obliquely truncate; stipules caducous or scarious to indurate (sometimes spinose in A. incrassata)"	1108
1107	"Petals obscurely 1-nerved; heads cream to pale yellow; branchlets not pruinose"	"Acacia divergens"
1107	"Petals striate; heads golden; branchlets pruinose"	"Acacia phaeocalyx"
1108	"Heads golden; bracteoles acuminate; peduncles appressed-puberulous to subglabrous; subshrub 15–30 cm high"	"Acacia incrassata"
1108	"Heads pale yellow; bracteoles not acuminate; peduncles glabrous; shrub 0.5–2.3 m high"	1109
1109	"Stipules usually persistent; phyllodes scarcely pungent, often ±patent with upper margin not contiguous with branchlet"	"Acacia truncata"
1109	"Stipules caducous; phyllodes pungent, with upper margin erect and ±contiguous with branchlet"	"Acacia littorea"
1110	"Branchlets and phyllodes with gland-tipped hairs; phyllodes small (3.5–7 × 1.2–2.5 mm) (northern W.A. & N.T.)"	"Acacia froggattii"
1110	"Characters not combined as above (hairs rarely gland-tipped)"	1111
1111	"Branchlets divaricate, striate-ribbed, green, somewhat spinose, glabrous; phyllodes few, 5–20 × 1–1.5 mm; heads c. 25-flowered; sepals free (W.A., N.T.)"	"Acacia wiseana"
1111	"Characters not combined as above"	1112
1112	"Phyllodes 20–45 cm long, 1.5–2 (–3) mm wide; branchlets pruinose (NW W.A.)"	"Acacia aphanoclada"
1112	"Phyllode and branchlet characters not combined as above"	1113
1113	"Phyllodes (mature nodes) all or mostly fasciculate in groups of 2 or more (often on nodose branchlets which may grow out and bear non-fasciculate phyllodes)"	1114
1113	"Phyllodes all or mostly not fasciculate"	1122
1114	"Phyllodes mostly reflexed, 3–5 × c. 1 mm, thick, glabrous; peduncles 2.5–4 mm long (SW W.A.)"	"Acacia diminuta"
1114	"Phyllode characters not combined as above (rarely some reflexed)"	1115
1115	"Phyllodes less then 4 mm long, glabrous"	1116
1115	"Phyllodes some or all > 4 mm long, hairy or glabrous (W.A.)"	1117
1116	"Branchlets glabrous; peduncles 2–3.5 mm long; shrub not resinous (SW W.A.)"	"Acacia sorophylla"
1116	"Branchlets hairy; peduncles 5–10 mm long; shrub resinous (arid zone: W.A., N.T.)"	"Acacia minutifolia"
1117	"Phyllodes sharply pungent, narrowly linear, 10–50 × 1–3 mm, glabrous; funicle bright yellow and encircling seed"	"Acacia tetragonophylla"
1117	"Phyllode characters not combined as above; funicle not encircling seed"	1118
1118	"Branchlets with conspicuous thorns (5–20 mm long) at many nodes, ±glabrous; phyllodes 10–20 mm long, ±glabrous; heads obloid"	"Acacia kochii"
1118	"Branchlets without axillary thorns (but sometimes spinose at tips); other characters not combined as above"	1119
1119	"Sepals united, less than 1/2 length of petals; stipules often spinose"	"Acacia cuneifolia"
1119	"Sepals free or almost free, normally more than 1/2 length of petals"	1120
1120	"Branches with numerous, short, divaricate, spinose branchlets"	"Acacia lullfitziorum"
1120	"Branches not as above"	1121
1121	"Phyllodes 7–20 × 0.5–3 mm, narrowly oblong to linear or linear-oblanceolate; stipules often spinose"	"Acacia nodiflora"
1121	"Phyllodes 3–7 × 1–2 mm, cuneate-oblanceolate, thick; stipules not spinose"	"Acacia adinophylla"
1122	"Phyllodes sharply pungent with needle-like points that readily pierce the skin upon touch"	1123
1122	"Phyllodes innocuous or with hard, rigid points (which do not readily piece the skin)"	1198
1123	"Phyllodes continuous with branchlets (SW W.A.)"	1124
1123	"Phyllodes not continuous with branchlets, sessile or pulvinate"	1126
1124	"Heads sessile; phyllodes 10–30 mm long"	"Acacia unifissilis"
1124	"Heads pedunculate"	1125
1125	"Peduncles hairy; branchlets hairy or glabrous; free portion of phyllodes 15–60 mm long"	"Acacia ataxiphylla"
1125	"Peduncles and branchlets glabrous; free portion of phyllodes 2–10 (–20) mm long"	"Acacia daviesioides"
1126	"Stipules ±spinose (sometimes only the hardened bases persisting at some nodes)"	1127
1126	"Stipules not at all spinose (often setaceous, sometimes caducous)"	1149
1127	"Phyllodes strongly 2-nerved on each face, linear and 1–2 mm wide (S.A.)"	"Acacia hexaneura"
1127	"Phyllode characters not combined as above"	1128
1128	"Phyllodes with principal longitudinal nerve situated towards lower margin AND upper margin never 2-nerved and broader than the 1-nerved lower margin (W.A.)"	1129
1128	"Phyllodes nerveless or the principal nerve ±central AND/OR the upper margin 2-nerved, ±thickened and wider than the 1-nerved lower margin"	1134
1129	"Stipules 6–17 mm long; branchlets and phyllodes glabrous"	"Acacia rendlei"
1129	"Stipules 2–4 mm long AND/OR branchlets and phyllodes hairy"	1130
1130	"Branchlet ribs muricate-scabridulous; stipules recurved; flower buds, new shoots and peduncles red"	"Acacia aculeiformis"
1130	"Characters not combined as above"	1131
1131	"Petals striate, hairy (rarely glabrous); phyllodes 7–10 (–15) mm wide; pods striate, dark red-brown"	"Acacia dilatata"
1131	"Petals not striate (nerveless or 1-nerved); pods not as above"	1132
1132	"Phyllodes lanceolate to narrowly elliptic, acuminate; pods 8–10 mm wide, blackish; heads 17–20-flowered"	"Acacia xerophila"
1132	"Phyllodes and pods not as above"	1133
1133	"Heads 30–65-flowered; sepals free, c. 1/2 as long as petals"	"Acacia congesta"
1133	"Heads 23–26-flowered; sepals united, less than 1/2 length of petals"	"Acacia cuneifolia"
1134	"Heads 7- or 8-flowered; phyllodes 4–10 × 1.5–2 mm, variably scabridulous (SW W.A.)"	"Acacia concolorans"
1134	"Heads more than 8-flowered; phyllode characters not combined as above"	1135
1135	"Phyllodes erect, narrowly linear, 0.7–1.5 mm wide; branchlets glabrous (SW W.A.)"	"Acacia teretifolia"
1135	"Characters not combined as above"	1136
1136	"Phyllodes thick, nerveless, 4–10 × 1–2 mm; branchlets hairy (W.A.)"	"Acacia pritzeliana"
1136	"Characters not combined as above (phyllode nerves always evident)"	1137
1137	"Upper margin of phyllodes thick and 2-nerved (nerves extending from base ±to apex), wider than the 1-nerved lower margin (W.A.)"	1138
1137	"Upper margin of phyllodes 1-nerved (occasionally 2-nerved below middle), not broader than lower margin"	1140
1138	"Sepals 1/4–1/2-united; phyllodes 20–30 × 2–7 mm"	"Acacia xerophila"
1138	"Sepals free or almost free; phyllodes 4–25 × 1–4 mm"	1139
1139	"Branchlets not obviously ribbed; heads (12–) 20–30-flowered"	"Acacia andrewsii"
1139	"Branchlets ribbed; heads 30–50-flowered"	"Acacia baxteri"
1140	"Phyllodes 10–25 × 10–30 mm, about as long as wide; peduncles 10–30 mm long; branchlets glabrous (arid zone: W.A., N.T., S.A., Qld)"	"Acacia strongylophylla"
1140	"Phyllodes and branchlets not as above (W.A.)"	1141
1141	"Branchlets pruinose; stipules 5–12 mm long; phyllodes lanceolate, 30–60 × 4–10 mm, ±thin-textured"	"Acacia dempsteri"
1141	"Characters not combined as above (branchlets normally not pruinose)"	1142
1142	"Phyllodes 20–30 × 2–7 mm, acuminate, ±glaucous, thick and rigid; branchlets glabrous"	"Acacia xerophila"
1142	"Characters not combined as above"	1143
1143	"Heads pale yellow; phyllodes oblong-oblanceolate to linear, 30–60 × 2–5 mm, l:w = 6–15; shrub or tree 3–7 m high"	"Acacia cuspidifolia"
1143	"Heads golden; phyllode characters not combined as above; subshrubs or shrubs 0.2–2.5 m high"	1144
1144	"Heads less than 30-flowered; phyllodes 7–25 × 1–4 (–6) mm"	1145
1144	"Heads 30–100-flowered"	1147
1145	"Sepals united; phyllodes mostly cuneate or oblong-cuneate and broadest above the middle"	"Acacia cuneifolia"
1145	"Sepals free; phyllodes not as above"	1146
1146	"Branchlets normally densely hairy (rarely glabrous); phyllodes oblique and pungent at apex, usually narrowly oblong"	"Acacia auronitens"
1146	"Branchlets glabrous; phyllodes acuminate, broadest at or below middle"	"Acacia truculenta"
1147	"Pods densely hairy, undulate; sepals 1/4–2/3-united"	"Acacia idiomorpha"
1147	"Pods glabrous; sepals ±free to base"	1148
1148	"Phyllodes 3–7 mm wide, inequilateral with lower margin straighter than the convex upper margin, not or scarcely puncticulate"	"Acacia congesta"
1148	"Phyllodes 7–15 mm wide, symmetrical with both margins convex, puncticulate"	"Acacia puncticulata"
1149	"Phyllodes 5–10 cm long, 2–3 mm wide, narrowly linear; inflorescences simple; heads 20–30-flowered; peduncles 4–12 mm long; funicle exarillate (N.S.W.)"	"Acacia juncifolia"
1149	"Phyllodes less then 5 cm long and/or > 3 mm wide OR if not then other characters not combined as above"	1150
1150	"Branchlets glabrous, spinose or subspinose; stipules caducous; phyllodes glaucous to subglaucous, with lateral nerves absent or very obscure; inflorescences reduced racemes; peduncles 5–12 mm long (W.A.)"	1151
1150	"Characters not combined as above"	1152
1151	"Heads 12–21-flowered; phyllodes often with a prominent gland-angle on upper margin; branchlets not striate-ribbed"	"Acacia inaequiloba"
1151	"Heads 25–40-flowered; phyllodes without a gland-angle on upper margin; branchlets striate-ribbed"	"Acacia scleroclada"
1152	"Branchlets glabrous, resinous-viscid, lenticellular; stipules not spinose, 0.5–1.5 mm long, embedded in resin; heads 50–90-flowered; sepals free (arid zone: W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia maitlandii"
1152	"Characters not combined as above"	1153
1153	"Phyllodes all or most strongly retrorse, sessile, linear, 15–25 mm long (SW W.A.)"	"Acacia retrorsa"
1153	"Phyllodes patent to erect OR if retrorse (rare) then other characters not combined as above"	1154
1154	"Upper margin of phyllodes 2-nerved (nerves extending from base ±to apex), often thick and nerve-like, wider than the 1-nerved lower margin (SW W.A.)"	1155
1154	"Upper margin of phyllodes 1-nerved (occasionally 2-nerved in lower half to the gland), not broader than lower margin"	1158
1155	"Petals striate (best observed in buds)"	1156
1155	"Petals 1-nerved or nerveless"	1157
1156	"Phyllodes narrowly lanceolate, 6–15 mm long"	"Acacia costata"
1156	"Phyllodes ±linear, 10–30 mm long"	"Acacia barbinervis"
1157	"Phyllodes 4–12 mm long; calyx 1/2–2/3 length of petals"	"Acacia acutata"
1157	"Phyllodes 2–4 mm long OR if longer (rare, Southern Cross area) then calyx absent or less than 1/2 length of petals"	"Acacia intricata"
1158	"Phyllodes 4–25 × 0.5–4 mm, not broadest above middle (linear-triangular, lanceolate, linear, narrowly oblong or narrowly elliptic), commonly tapered to apex and sometimes with a pronounced gland-angle on upper margin"	1159
1158	"Phyllodes some or all > 25 mm long or > 4 mm wide OR if not then other characters not combined as above (often broadest above middle and/or markedly asymmetric)"	1179
1159	"Bracteoles gradually or abruptly narrowed to a distinct, slender, acuminate point, exserted or not in buds; stipules persistent, 0.5–3 mm long, ±setaceous (not SW W.A. except A. auronitens)"	1160
1159	"Bracteoles obtuse, short-acute or absent"	1167
1160	"Funicle arillate; phyllodes obliquely narrowed at sometimes recurved apices; pulvinus short, yellow, basally dilated; pods thickly crustaceous to woody (SW W.A.)"	"Acacia auronitens"
1160	"Funicle exarillate; phyllodes ±sessile (eastern Aust.)"	1161
1161	"Peduncles 1.5–4 mm long; phyllodes narrowly linear to linear-triangular or narrowly triangular, without a pronounced gland angle on upper margin; heads not cream"	1162
1161	"Peduncles longer than 4 mm OR if not then phyllodes with a pronounced gland-angle along upper margin and/or heads cream"	1163
1162	"Heads bright lemon yellow, 8–18-flowered (Qld)"	"Acacia neobrachycarpa"
1162	"Heads golden, 20–30-flowered (N.S.W.)"	"Acacia asparagoides"
1163	"Heads cream to pale yellow"	1164
1163	"Heads golden"	1165
1164	"Phyllodes linear-triangular, without a pronounced gland angle (Qld, N.S.W., A.C.T., Vic., Tas.)"	"Acacia ulicifolia"
1164	"Phyllodes normally inequilateral with a pronounced gland-angle on upper margin (S.A., Qld, N.S.W., A.C.T., Vic., Tas.)"	"Acacia gunnii"
1165	"Phyllodes lanceolate to ±narrowly triangular, 1.7–3 mm wide; peduncles stout; bracteoles exserted beyond flowers in mature buds (Qld)"	"Acacia saxicola"
1165	"Phyllodes narrowly linear, 0.5–1.5 mm wide"	1166
1166	"Bracteoles not or scarcely exserted beyond flowers in mature buds; peduncles slender (Qld, N.S.W., Vic.)"	"Acacia brownii"
1166	"Bracteoles exserted beyond flowers in mature buds; peduncles stout (N.S.W.)"	"Acacia echinula"
1167	"Phyllodes thick, nerveless, 4–10 × 1–2 mm; stipules persistent; branchlets hairy (SW W.A.)"	"Acacia pritzeliana"
1167	"Characters not combined as above"	1168
1168	"Sepals united"	1169
1168	"Sepals free"	1174
1169	"Heads 5–7-flowered (SW W.A.)"	1170
1169	"Heads 10–23-flowered, golden"	1171
1170	"Heads golden, sessile"	"Acacia acuaria"
1170	"Heads cream coloured; peduncles 3–7 mm long"	"Acacia ingrata"
1171	"Phyllodes linear-triangular (broadest at sessile base, tapered to apex); branchlets glabrous; pods not coiled (W.A.)"	"Acacia plautella"
1171	"Phyllodes not as above; branchlets often hairy"	1172
1172	"Phyllodes linear, c. 1 mm wide (SW W.A.)"	"Acacia acuaria"
1172	"Phyllodes inequilaterally lanceolate to lanceolate-elliptic, > 1 mm wide"	1173
1173	"Phyllode midrib near lower margin; branchlets not spinose or pruinose (SW W.A., N.S.W., Qld)"	"Acacia amblygona"
1173	"Phyllode midrib ±central; branchlets somewhat spinose, pruinose at extremities (SW W.A.)"	"Acacia lanceolata"
1174	"Phyllodes sessile"	1175
1174	"Phyllodes narrowed to a short, but distinct, pulvinus (SW W.A.)"	1176
1175	"Heads 30–40-flowered; penultimate branchlets with prominent lenticels and/or bark breaking into ±rectangular flakes (N.S.W., A.C.T., Vic., Tas.)"	"Acacia siculiformis"
1175	"Heads 13–23-flowered; penultimate branchlets not as above (SW W.A.)"	"Acacia sphacelata"
1176	"Phyllodes 0.6–2 mm wide, commonly at least some reflexed; branchlets ±spinose (sharply or coarsely pungent), minutely woolly to appressed-pubescent"	1177
1176	"Phyllodes 2–4 mm wide, 7–20 mm long, mostly ascending to erect; branchlets not spinose, glabrous or pubescent to villous"	1178
1177	"Phyllodes 7–25 mm long, narrowly linear"	"Acacia sessilis"
1177	"Phyllodes 4–7.5 mm long, narrowly elliptic to narrowly oblong"	"Acacia erioclada"
1178	"Stipules caducous; branchlets glabrous; inflorescences 2–5-headed racemes"	"Acacia camptoclada"
1178	"Stipules subpersistent; branchlets hairy, glabrescent; inflorescences simple or 1- or 2-headed racemes"	"Acacia excentrica"
1179	"Phyllodes broadest above middle and normally cuneate to oblong-cuneate, glabrous; heads 23–26-flowered; sepals united, 1/4–1/3 length of petals (SW W.A.)"	"Acacia cuneifolia"
1179	"Characters not combined as above"	1180
1180	"Main longitudinal nerve of phyllodes situated near lower margin (commonly with one or more minor nerves diverging from the main nerve or pulvinus and intersecting upper margin); sepals mostly united"	1181
1180	"Main nerve of phyllodes ±central (lateral nerves commonly absent or obscure)"	1188
1181	"Petals striate; stipules 2–4 mm long (SW W.A.)"	"Acacia dilatata"
1181	"Petals not striate; stipules 0.5–2 mm long or caducous"	1182
1182	"Phyllodes ±gradually narrowed to long, straight, sharply pungent points, (4–20 mm long)"	1183
1182	"Phyllodes ±abruptly narrowed to rather short, straight or recurved, sometimes scarcely pungent points, (2–15 × 1.5–7 mm with l:w 1–3.5); branchlets commonly spinose"	1185
1183	"Phyllodes 1.5–4 mm wide, l:w = 2–5 (–14); pods strongly curved to openly coiled; branchlets not spinose (SW W.A., Qld, N.S.W.)"	"Acacia amblygona"
1183	"Phyllodes 3–10 mm wide, l:w < 2; branchlets commonly spinose (SW W.A.)"	1184
1184	"Branchlets hairy; phyllodes green; pods tightly coiled"	"Acacia flabellifolia"
1184	"Branchlets glabrous; phyllodes ±glaucous; pods not coiled, undulate"	"Acacia scalena"
1185	"Bracteoles absent; pods curved to openly once-coiled (SW W.A.)"	"Acacia rostellata"
1185	"Bracteoles present"	1186
1186	"Pods openly 1–11/2-coiled; branchlets spinose; phyllodes with l:w = 1.5–3.5 (SW W.A.)"	"Acacia sphenophylla"
1186	"Pods tightly and somewhat irregularly coiled; phyllodes with l:w = 1–2"	1187
1187	"Peduncles normally glabrous (SW W.A., S.A., Qld, N.S.W.)"	"Acacia pravifolia"
1187	"Peduncles hairy (SW W.A.)"	"Acacia ericksoniae"
1188	"Phyllodes 3–6 × 2–4 mm, obtriangular to obdeltate (SW W.A.)"	"Acacia rostellata"
1188	"Phyllode characters not combined as above"	1189
1189	"Heads white, cream or pale yellow"	1190
1189	"Heads golden (SW W.A., S.A.)"	1193
1190	"Phyllodes lanceolate to linear-lanceolate or narrowly elliptic, 1.5–4 mm wide, with main nerve running into apical point (N.S.W., A.C.T., Vic., Tas.)"	"Acacia siculiformis"
1190	"Phyllodes not as above (main nerve intersecting margin below apical point)"	1191
1191	"Phyllodes obtriangular, with upper margin prominently angled well above middle; calyx absent (SW W.A.)"	"Acacia forrestiana"
1191	"Phyllodes not obtriangular (broadest below, near or just above middle), with upper margin conspicuously rounded"	1192
1192	"Calyx present; phyllodes glabrous; pods 10–15 mm wide (Qld)"	"Acacia hubbardiana"
1192	"Calyx absent; phyllodes pubescent or glabrous; pods 3.5–5 mm wide (SW W.A.)"	"Acacia huegelii"
1193	"Sepals variably united for 1/4–2/3 their length; stipules 2–7 mm long; phyllodes undulate, ±thin-textured, green; heads 40–100-flowered (W.A.)"	"Acacia idiomorpha"
1193	"Sepals free or almost free; other characters not combined as above (phyllodes often grey-green to glaucous)"	1194
1194	"Branchlets hairy (hairs often minute and confined to upper branchlets); phyllodes usually 8–25 mm long and 5–17 mm wide; pods 2–3 mm wide, curved to coiled (W.A., S.A.)"	"Acacia merrallii"
1194	"Branchlets glabrous (SW W.A.)"	1195
1195	"Phyllodes 7–17 × 2–5 mm"	"Acacia camptoclada"
1195	"Phyllodes longer and/or wider than above"	1196
1196	"Petals with scattered, appressed, brown to black hairs; stipules caducous; racemes enclosed by conspicuous bracts when young"	"Acacia nigripilosa"
1196	"Petals glabrous; stipules persistent (with at least the thickened bases remaining), 1.5–4 mm long; racemes (when present) not enclosed by bracts"	1197
1197	"Phyllodes dimorphic (broadest at base of branches), wrinkled when dry; heads 36–53-flowered"	"Acacia pachyphylla"
1197	"Characters not combined as above"	"Acacia glaucissima"
1198	"Branchlets ending in hard, rigid, ±spinose points (sharply or coarsely pungent)"	1199
1198	"Branchlets not as above"	1222
1199	"Phyllodes with l:w = 4–20, commonly linear to narrowly oblong"	1200
1199	"Phyllodes with l:w < 4, commonly elliptic, ovate or obtriangular (rarely narrowly oblong, never linear)"	1212
1200	"Phyllodes mostly reflexed, 3–5 × c. 1 mm, thick; peduncles 2.5–4 mm long; heads c. 15-flowered (SW W.A.)"	"Acacia diminuta"
1200	"Phyllodes not reflexed; other characters not combined as above"	1201
1201	"Heads 6–10-flowered (SW W.A.)"	1202
1201	"Heads 12–30-flowered"	1204
1202	"Terminal branchlets ribless or obscurely ribbed; bracteoles present; phyllodes < 1 mm wide"	"Acacia pulviniformis"
1202	"Terminal branchlets rather obviously ribbed; bracteoles absent or few; phyllodes 1–2.5 mm wide"	1203
1203	"Branchlets green"	"Acacia ferocior"
1203	"Branchlets ±pruinose"	"Acacia spinosissima"
1204	"Sepals free (SW W.A.)"	1205
1204	"Sepals united"	1206
1205	"Phyllodes 3–8 × 0.5–1 mm; terminal branchlets divided into a few, short, radiating spines"	"Acacia acanthaster"
1205	"Phyllodes mostly 10–20 × 1.5–4 mm; terminal branchlets undivided"	"Acacia deficiens"
1206	"Phyllodes 20–40 mm long, distant and few; branchlets obscurely ribbed; heads cream (W.A.)"	"Acacia microcalyx"
1206	"Phyllodes < 20 mm long OR if not then branchlets prominently ribbed and heads golden"	1207
1207	"Branchlets rather prominently ribbed and pruinose (SW W.A.)"	1208
1207	"Branchlets ribless or finely ribbed, pruinose or not (SW W.A. and central and eastern Aust.)"	1209
1208	"Bracteoles broad and ±evident in buds; phyllodes with midrib clearly raised"	"Acacia ulicina"
1208	"Bracteoles absent or few and insignificant; phyllodes with midrib scarcely raised"	"Acacia spinosissima"
1209	"Pods twisted or coiled, 2–3 mm wide; phyllodes cuneate to obtriangular (broadest near apex), sometimes ±linear (SW W.A. to S.A., SE N.S.W., NE Vic.)"	"Acacia acanthoclada"
1209	"Pod and phyllode characters not combined as above (W.A., N.T., S.A.)"	1210
1210	"Phyllodes grey-green to glaucous, obliquely oblong to oblong-elliptic or oblong-oblanceolate; seeds 3.5–4 mm long"	"Acacia erinacea"
1210	"Phyllodes green, not glaucous, narrowly oblong to linear; seeds 2–2.5 mm long (not seen in A. basedowii)"	1211
1211	"Branchlets white by a conspicuous, flaking epidermis; peduncles 8–12 mm long; heads commonly 25–35-flowered (central Aust. in W.A., N.T. & S.A.)"	"Acacia basedowii"
1211	"Branchlets not as above; peduncles 5–10 mm long; heads 20–25-flowered (SW W.A.)"	"Acacia oxyclada"
1212	"Phyllodes triangular to obtriangular or oblanceolate"	1213
1212	"Phyllodes ovate to elliptic or ±circular, sometimes ±oblong"	1217
1213	"Branchlets glabrous AND phyllodes glaucous to subglaucous and 2–3 mm wide (W.A.)"	"Acacia acanthoclada"
1213	"Branchlets hairy OR if glabrous then phyllode characters not combined as above"	1214
1214	"Pods submoniliform and openly 1–11/2-coiled; phyllodes 3–11 × 1.5–5 mm with l:w = 1.5–3.5 (SW W.A.)"	"Acacia sphenophylla"
1214	"Pods tightly and somewhat irregularly coiled"	1215
1215	"Phyllodes with l:w = 2–6 (SW W.A. to S.A., SE N.S.W., NE Vic.)"	"Acacia acanthoclada"
1215	"Phyllodes with l:w = 1–2"	1216
1216	"Peduncles normally glabrous (SW W.A., S.A., Qld, N.S.W.)"	"Acacia pravifolia"
1216	"Peduncles hairy (SW W.A.)"	"Acacia ericksoniae"
1217	"Heads obloid; phyllodes inequilateral with ±straight upper margin and convex lower margin, 3.5–7 × 1.5–2.5 mm; peduncles 3–4 mm long (W.A.)"	"Acacia imitans"
1217	"Characters not combined as above (heads globular or, in A. lullfitziorum, sometimes shortly obloid)"	1218
1218	"Phyllodes 10–20 × 5–10 mm; branches not divided into short, rigid, divaricate branchlets; heads c. 25-flowered (SW W.A.)"	"Acacia semicircinalis"
1218	"Phyllodes shorter and/or narrower than above; branches divided into numerous, short, rigid, divaricate branchlets; heads 9–22-flowered"	1219
1219	"Branchlets hirtellous with short, patent hairs, white-waxy between prominent ribs"	"Acacia improcera"
1219	"Branchlets glabrous OR if hairy then not white-waxy between prominent ribs"	1220
1220	"Bracteoles absent; pods 3–3.5 mm wide, strongly curved to openly coiled; phyllodes commonly slightly undulate (SW W.A.)"	"Acacia jacksonioides"
1220	"Bracteoles present at base of flowers, 0.5–1 mm long; pods not as above; phyllodes not undulate"	1221
1221	"Sepals united into a very short cup; pods 7–10 mm wide (SW W.A. to S.A.)"	"Acacia erinacea"
1221	"Sepals free; pods 2 mm wide (SW W.A.)"	"Acacia lullfitziorum"
1222	"Phyllodes horizontally flattened, 3–25 × 0.5–7 mm, commonly fleshy (thus wrinkled when dry) and with obscure nerves; gland (when present) on upper surface of phyllode, very small (SW W.A.)"	1223
1222	"Phyllodes vertically flattened; gland (when present) on upper margin of phyllode"	1229
1223	"Phyllodes 4–8 × 1 mm, linear to narrowly oblong, with apex shallowly recurved to uncinate and abruptly narrowed to a distinct, slender mucro; branchlets pubescent; sepals united"	"Acacia vassalii"
1223	"Characters not combined as above (phyllode apices not recurved or with slender mucro)"	1224
1224	"Sepals united into ±truncate calyx; phyllodes narrowly oblong-oblanceolate, rounded-obtuse, fleshy (wrinkled when dry), green; heads subdensely 9–15-flowered"	"Acacia spathulifolia"
1224	"Sepals free OR if to 1/2-united (A. leptospermoides) then other characters not combined as above"	1225
1225	"Phyllodes loosely villous at least when young, linear to narrowly oblong, 5–25 × 0.5–1.5 mm, green, ±nerveless; branchlets loosely villous to appressed-pilose"	"Acacia ericifolia"
1225	"Characters not combined as above"	1226
1226	"Heads 20–35-flowered; stipules (evident on new shoots) connate, c. 2 mm long; heads axillary (not in racemes), ebracteate at base; phyllodes glaucous"	"Acacia leptospermoides"
1226	"Heads 6–20-flowered; stipules not as above; bract (small or large) present at base of peduncles"	1227
1227	"Inflorescences comprising 2-headed racemes with distinct axis 0.5–2 mm long; peduncles 6–15 mm long, with basal bract ovate and c. 0.5 mm long; phyllodes green, 8–17 mm long"	"Acacia binata"
1227	"Inflorescences simple or if racemose the axis rudimentary (not more than 0.5 mm long); basal peduncular bract rostriform, 1.5–2.5 mm long; phyllodes commonly glaucous"	1228
1228	"Heads 13–15-flowered; phyllodes 8–15 mm long, apiculate"	"Acacia diaphyllodinea"
1228	"Heads 7–10-flowered; phyllodes 4–10 mm long, obtuse"	"Acacia crassuloides"
1229	"Phyllodes asperulous by rigid, spreading hairs (some gland-tipped), 10–30 × 2–4 mm; gland-tipped hairs common on branchlets, peduncles and pods (N.S.W., A.C.T., Vic.)"	"Acacia aspera"
1229	"Characters not as above (gland-tipped hairs very rare)"	1230
1230	"Phyllodes 13–23 cm × 1.5–3.5 mm; branchlets resinous-viscid; peduncles 8–11 mm long, glabrous; sepals free (Qld)"	"Acacia dietrichiana"
1230	"Phyllodes shorter and/or wider than above OR if not then other characters not combined as above"	1231
1231	"Phyllodes clearly continuous with branchlets, narrowly linear, 15–60 × 1–2 mm (SW W.A.)"	"Acacia ataxiphylla"
1231	"Phyllodes not continuous with branchlets OR if partially so then other characters not as above"	1232
1232	"Phyllodes with minor nerves forming a close, longitudinal or oblique reticulum, 3.5–14 cm long, 3–15 mm wide, midrib central or near upper margin, occasionally 2-nerved on each face; peduncles with persistent basal bract"	1233
1232	"Characters not combined as above (phyllodes not reticulate OR if so then openly so AND/OR peduncles ebracteate at base)"	1234
1233	"Phyllodes with midrib central, and upper margin 1-nerved (S.A., Qld, N.S.W., Vic., Tas.)"	"Acacia stricta"
1233	"Phyllodes with midrib near lower margin (occasion-ally central), and upper margin 2-nerved (SW W.A.)"	"Acacia errabunda"
1234	"Heads obloid; new shoots and peduncles densely hairy; phyllodes 20–90 × 1–4 mm, linear to narrowly oblong-oblanceolate (SW W.A.)"	"Acacia ashbyae"
1234	"Heads globular OR if obloid then other characters not combined as above"	1235
1235	"Sepals free AND branchlets, phyllodes and heads not obviously resinous or viscid"	1236
1235	"Sepals united for at least 1/4 their length AND/OR branchlets, phyllodes or heads ±obviously resinous or viscid"	1328
1236	"Phyllodes with 2 main longitudinal nerves on each face AND glabrous (SW W.A.)"	1237
1236	"Phyllodes nerveless or with 1 main longitudinal nerve on each face OR if 2-nerved (rare) then hairy"	1239
1237	"Phyllodes 8–16 × 1–2 mm"	"Acacia sulcata"
1237	"Phyllodes longer and/or wider than above"	1238
1238	"Phyllodes with upper margin 1-nerved"	"Acacia dura"
1238	"Phyllodes with upper margin 2-nerved for 1/4–1/2 their length, the nerves coalescing near the gland (view phyllode edge-on)"	"Acacia nitidula"
1239	"Pods (8–) 10–20 mm wide; phyllodes 4–15 cm long, with lateral nerves openly anastomosing; inflorescences short racemes, sometimes appearing as axillary clusters; trees (Qld)"	1240
1239	"Characters not combined as above"	1241
1240	"Phyllodes 7–20 (–35) mm wide; basal gland < 1 mm long; seeds ±longitudinal"	"Acacia fasciculifera"
1240	"Phyllodes 3–8 mm wide; basal gland 1–2 mm long; seeds transverse"	"Acacia crombiei"
1241	"Phyllodes densely sericeous with silvery blue-grey hairs covering entire surface (greenish yellow on new shoots), oblanceolate, 2.5–5 (–6) cm long (S.A., Vic.)"	"Acacia argyrophylla"
1241	"Phyllode characters not combined as above"	1242
1242	"Stipules persistent, setaceous, recurved; phyllodes 5–17 mm long, 1–1.5 mm wide, glabrous; branchlets hairy (SW W.A.)"	1243
1242	"Characters not combined as above"	1244
1243	"Phyllodes ±nerveless; stipules 1.5–3 mm long"	"Acacia pusilla"
1243	"Phyllodes prominently nerved; stipules 5–7 mm long"	"Acacia rhamphophylla"
1244	"Phyllodes with midrib close to upper margin, 9–17 × 1–2.5 mm, ±linear; branchlets sparsely to densely hairy; stipules caducous (S.A., Qld, N.S.W., Vic.)"	"Acacia lineata"
1244	"Phyllode characters not combined as above (midrib, when present, usually central or sometimes situated towards lower margin)"	1245
1245	"Phyllodes with a small gland at their obliquely truncate, retuse or obtuse apices; inflorescences rudimentary 1-headed racemes 0.5–1 (–3.5) mm long; peduncles 3–20 mm long (S.A., N.S.W., Vic.)"	1246
1245	"Characters not combined as above (phyllodes normally eglandular at apex)"	1250
1246	"Phyllodes narrowly linear, 20–90 × 1–2.5 mm, with midrib ±absent; heads 34–58-flowered (S.A.)"	"Acacia praemorsa"
1246	"Phyllodes normally shorter and/or broader than above, with midrib present (often not prominent); heads 10–22-flowered"	1247
1247	"Gland (small) present on upper margin of all or most phyllodes near or below their centre (S.A., N.S.W., Vic.)"	1248
1247	"Gland absent from lower half of phyllodes (rarely present on a few phyllodes); phyllodes 10–25 (–38) mm long (S.A.)"	1249
1248	"Phyllodes 4–15 (–25) × 2–8 mm with l:w = 1–5, hairy or glabrous; branchlets hairy or glabrous"	"Acacia acinacea"
1248	"Phyllodes mostly 20–55 × 4–10 mm with l:w = 4–10, glabrous; branchlets glabrous"	"Acacia microcarpa"
1249	"Phyllodes 1–2 (–3) mm wide, l:w = 5–10, erect"	"Acacia imbricata"
1249	"Phyllodes 2–6 mm wide, l:w = 3–8, mostly inclined to ascending"	"Acacia triquetra"
1250	"Petals with ±sparse, brown to black, appressed hairs; racemes enclosed when young by conspicuous bracts; phyllodes 2–7 cm long (SW W.A.)"	"Acacia nigripilosa"
1250	"Petals glabrous or white-hairy; racemes (when present) not enclosed by bracts when young OR if so then phyllodes < 2 cm long"	1251
1251	"Phyllodes linear or linear-oblanceolate"	1252
1251	"Phyllodes not linear or linear-lanceolate"	1284
1252	"Phyllodes fleshy, coarsely wrinkled when dry, 10–45 mm long, 2–3 mm wide; plants glabrous (S.A.)"	"Acacia pinguifolia"
1252	"Characters not combined as above"	1253
1253	"Phyllodes 5–25 mm long AND 1–3 mm wide, straight to shallowly incurved"	1254
1253	"Phyllodes some or all > 25 mm long AND/OR > 3 mm wide or shallowly recurved"	1265
1254	"Branchlets, phyllodes AND peduncles glabrous"	1255
1254	"Branchlets, phyllodes OR peduncles hairy to some degree"	1258
1255	"Heads 40–70-flowered; phyllodes subfleshy, finely but obviously wrinkled when dry, with nerves absent or obscure (arid zone: W.A.)"	"Acacia synchronicia"
1255	"Heads less than 40-flowered; phyllode characters not combined as above"	1256
1256	"Phyllodes 7–15 × 1–1.5 mm, glaucous at least when young, crowded, with midrib ±absent; pods 10–12 mm wide (SW W.A.)"	"Acacia profusa"
1256	"Phyllode characters not combined as above; pods 2–4.5 mm wide"	1257
1257	"Phyllodes 2 mm or more wide, with midrib not prom-inent; stipules ±persistent, 1.5–3 mm long (SW W.A.)"	"Acacia evenulosa"
1257	"Phyllodes 1–2 mm wide, with prominent midrib; stipules caducous or persistent and 3–5 mm long (SW W.A. to western S.A.)"	"Acacia mutabilis"
1258	"Phyllodes 5–12 × 1–1.6 mm, crowded; branchlets sparsely to densely hairy; pods 10–15 mm wide (Qld, N.S.W.)"	"Acacia conferta"
1258	"Characters not combined as above"	1259
1259	"Peduncles hairy"	1260
1259	"Peduncles glabrous (SW W.A. with A. mutabilis extending to western S.A.)"	1261
1260	"Heads 13–15-flowered; branchlet and peduncle hairs white (Qld, N.S.W.)"	"Acacia lineata"
1260	"Heads 30–45-flowered; branchlets and peduncles pubescent to villous with golden or white hairs (SW W.A.)"	"Acacia chrysopoda"
1261	"Branchlets densely pilose to pubescent by ±long, straight, patent hairs; phyllodes 0.7–1 (–1.5) mm wide, normally loosely hairy when young"	"Acacia lachnophylla"
1261	"Characters not combined as above"	1262
1262	"Phyllodes appressed-hairy at least when young"	1263
1262	"Phyllodes glabrous"	1264
1263	"Phyllodes with upper and lower margins 1-nerved"	"Acacia poliochroa"
1263	"Phyllodes with upper margin 2-nerved and slightly broader than the 1-nerved lower margin"	"Acacia quinquenervia"
1264	"Phyllodes 2 mm or more wide, with midrib not prominent; stipules ±persistent, 1.5–3 mm long"	"Acacia evenulosa"
1264	"Phyllodes 1–2 mm wide, with prominent midrib; stipules caducous or persistent and 3–5 mm long (SW W.A. to western S.A.)"	"Acacia mutabilis"
1265	"Phyllodes some or all > 70 mm long"	1266
1265	"Phyllodes to 70 mm long"	1272
1266	"Phyllodes shortly acuminate with delicate, curved points; funicle 1/2 to wholly encircling seed; inflorescences (1–) 2–4 (–13)-headed racemes (S.A., Qld, N.S.W.)"	"Acacia calamifolia"
1266	"Phyllodes rounded-obtuse to obtuse-mucronulate OR if acuminate then other characters not combined as above (funicle not encircling seed)"	1267
1267	"Phyllodes glaucous to subglaucous, 3–8 mm wide, oblanceolate to linear-oblanceolate, thickly coriaceous; pods 12–14 mm wide (W.A.)"	"Acacia gelasina"
1267	"Phyllode characters not combined as above (phyllodes green); pods 3–8 mm wide"	1268
1268	"Heads cream, 60–80-flowered (NW W.A.)"	"Acacia alexandri"
1268	"Heads golden, 18–40-flowered"	1269
1269	"Peduncles with a bract near or above middle (raised scar remaining when bract falls); stipules or their indurate bases persistent (SW W.A.)"	1270
1269	"Peduncles without a bract near or above middle; stipules early caducous"	1271
1270	"Phyllodes pulvinate, easily detached from branchlets, 2–5 mm wide, straight to shallowly curved"	"Acacia dentifera"
1270	"Phyllodes sessile, not easily separated from branchlets, 1–3 mm wide, curved to sinuous"	"Acacia graniticola"
1271	"Phyllode gland 2–8 mm above pulvinus; peduncles with a small, persistent basal bract (Qld, N.S.W.)"	"Acacia juncifolia"
1271	"Phyllode gland 10 mm or more above pulvinus; peduncles with basal bract early caducous (SW W.A.)"	"Acacia euthyphylla"
1272	"Heads cream; phyllodes strongly and acutely angled by raised nerves (SW W.A.)"	"Acacia gonophylla"
1272	"Heads golden; phyllodes not as above"	1273
1273	"Stipules persistent (often only bases remaining in A. halliana)"	1274
1273	"Stipules early caducous"	1277
1274	"Peduncles surrounded at base by a dense tuft of hairs; stipules 4–8 mm long, thick; phyllodes 4–15 mm wide, thickly coriaceous, wrinkled when dry (SW W.A.)"	"Acacia dermatophylla"
1274	"Peduncles glabrous at base; other characters not combined as above"	1275
1275	"Phyllodes with 2-nerved upper margin (view phyllode edge-on), the nerves coalescing above the gland normally in the lower 1/3–1/2 of the phyllode or remaining free to apex (SW W.A.)"	"Acacia mutabilis"
1275	"Phyllodes with 1-nerved upper margin (or if 2-nerved then the nerves coalescing close to the base, at or below the gland)"	1276
1276	"Phyllodes 2–3.5 mm wide, obtuse and with an inconspicuous, blunt mucro (SW W.A.)"	"Acacia evenulosa"
1276	"Phyllodes 4–15 mm wide, distinctly mucronate, acute to obtuse (S.A., N.S.W., Vic.)"	"Acacia halliana"
1277	"Phyllodes with 2-nerved upper margin (view phyllode edge-on), the nerves coalescing above the gland normally in the lower 1/3–1/2 of the phyllode or remaining free to apex (SW W.A.)"	1278
1277	"Phyllodes with 1-nerved upper margin (or if 2-nerved then nerves coalescing close to base, at or below gland)"	1279
1278	"Phyllodes and branchlets densely puberulous at least when young"	"Acacia quinquenervia"
1278	"Phyllodes glabrous (ignore pulvinus); branchlets glabrous except sometimes appressed-hairy mainly in phyllode axils"	"Acacia mutabilis"
1279	"Branchlets hairy; peduncles glabrous; phyllodes often shallowly recurved; aril bright orange (SW W.A.)"	"Acacia ligustrina"
1279	"Branchlets glabrous OR if hairy then other characters not combined as above"	1280
1280	"Phyllodes acute or obtuse, gradually or abruptly narrowed to delicate, curved to uncinate points (S.A., N.S.W., Vic.)"	1281
1280	"Phyllodes obtuse, mucro (if present) straight and erect"	1282
1281	"Peduncles, raceme axes and new shoots glabrous (S.A., N.S.W., Vic.)"	"Acacia calamifolia"
1281	"Peduncles, raceme axes and new shoots hairy to some degree (S.A., Vic.)"	"Acacia × grayana"
1282	"Phyllodes 3–8 mm wide, linear-oblanceolate; heads 35–50-flowered; pods 12–14 mm wide (W.A.)"	"Acacia gelasina"
1282	"Phyllodes 2–3 mm wide, linear; heads 18–30-flowered; pods 3–4 mm wide"	1283
1283	"Phyllode gland 2–8 mm above pulvinus; peduncles with a small, persistent basal bract (Qld, N.S.W.)"	"Acacia juncifolia"
1283	"Phyllode gland 10 mm or more above pulvinus; peduncles with basal bract early caducous (SW W.A.)"	"Acacia euthyphylla"
1284	"Phyllodes 2.5–4 × 2.2–4 mm, thick, with midrib strongly raised when dry (SW W.A.)"	"Acacia tetraptera"
1284	"Phyllode longer and/or wider than above"	1285
1285	"Branchlets hairy at least towards apices (hairs sometimes sparse or minute, observe carefully at ×10 mag.)"	1286
1285	"Branchlets glabrous"	1308
1286	"Branchlet hairs straight and appressed"	1287
1286	"Branchlet hairs ±patent AND/OR crisped or curved"	1294
1287	"Phyllodes with l:w < 4"	1288
1287	"Phyllodes some or all with l:w = 4–12"	1289
1288	"Peduncles hairy; phyllodes with a much-reduced mucro; new shoots sometimes golden (S.A., Vic.)"	"Acacia brachybotrya"
1288	"Peduncles glabrous; phyllodes with distinct mucro (W.A., S.A.)"	"Acacia merrallii"
1289	"Phyllodes with 2-nerved upper margin (view phyllode edge-on), the nerves coalescing above the gland normally in the lower 1/3–1/2 of the phyllode (SW W.A.)"	"Acacia mutabilis"
1289	"Phyllodes with 1-nerved upper margin (or if 2-nerved then nerves coalescing close to base, at or below gland)"	1290
1290	"Phyllodes obtuse and with an inconspicuous, blunt mucro (SW W.A.)"	1291
1290	"Phyllodes acute OR if obtuse then with a distinct, short, hard mucro"	1292
1291	"Branchlets ±sparsely hairy; phyllodes with l:w = 5–15, gland 1–4 mm above pulvinus"	"Acacia evenulosa"
1291	"Branchlets densely hairy at least when young; phyllodes with l:w = (3–) 4–6, gland at distal end of pulvinus"	"Acacia blaxellii"
1292	"Phyllodes 10–20 × 1–4 mm, glabrous, straight (SW W.A.)"	"Acacia excentrica"
1292	"Phyllodes longer and/or wider than above, appressed-hairy or glabrous, commonly shallowly recurved or incurved"	1293
1293	"Phyllodes with 1 gland (not on projection), glabrous or sparsely hairy when young; aril creamy white (S.A., N.S.W., Vic.)"	"Acacia halliana"
1293	"Phyllodes with 1–3 glands (often on small projections), densely hairy when young; aril bright orange (SW W.A.)"	"Acacia ligustrina"
1294	"Heads mauve-pink; phyllodes 15–35 × 4–6 mm, mucronate, puberulous (hairs often confined to margins with age); ±prostrate shrub (Qld)"	"Acacia purpureopetala"
1294	"Heads golden"	1295
1295	"Phyllode margins minutely tuberculate and commonly undulate (SW W.A.)"	1296
1295	"Phyllode margins neither tuberculate nor obviously undulate"	1297
1296	"Phyllodes puncticulate by brown to black, circular, resin-papillae when young, l:w = 4–10"	"Acacia tuberculata"
1296	"Phyllodes not puncticulate, l:w = 1.5–3"	"Acacia semicircinalis"
1297	"Phyllodes with l:w = 1–4"	1298
1297	"Phyllodes some or all with l:w > 4"	1304
1298	"Stipules spinose; peduncles 15–30 mm long (W.A.)"	"Acacia ryaniana"
1298	"Stipules not spinose"	1299
1299	"Peduncles hairy (S.A., N.S.W., Vic.)"	1300
1299	"Peduncles glabrous (SW W.A. except A. merrallii extending to S.A.)"	1301
1300	"Pods 14–18 mm wide; phyllodes 10–20 mm wide, densely hairy; peduncles 10–30 mm long, stout (S.A.)"	"Acacia spilleriana"
1300	"Pods 4–8 mm wide; phyllodes 4–13 mm wide, sparsely to densely hairy; peduncles 5–15 mm long, slender (S.A., N.S.W., Vic.)"	"Acacia brachybotrya"
1301	"Phyllodes obtuse (with an inconspicuous, blunt mucro), narrowly oblong to oblong-elliptic, 3–5 mm wide"	"Acacia blaxellii"
1301	"Phyllodes obtuse or acute (the mucro rigid but ±slender and distinct but short), other characters normally not combined as above"	1302
1302	"Phyllodes 2–5 mm wide, mostly narrowly elliptic to oblong-elliptic, with midrib slightly excentric; (seeds not seen)"	"Acacia excentrica"
1302	"Phyllode characters not combined as above; seed aril bright orange or yellow"	1303
1303	"Branchlet hairs normally straight to slightly curved; gland on lower half of phyllode, not raised; pods glabrous or subglabrous"	"Acacia merrallii"
1303	"Branchlet hairs crisped; gland near or above middle of phyllode, sometimes slightly raised; pods normally lanate-tomentose"	"Acacia sericocarpa"
1304	"Peduncles hairy OR if glabrous then phyllodes < 2 mm wide (Qld, N.S.W.)"	1305
1304	"Peduncles glabrous AND phyllodes some or all at least 2 mm wide (SW W.A.)"	1306
1305	"Phyllodes 5–12 mm long, ±nerveless but often finely longitudinally wrinkled; peduncles ebracteate at base"	"Acacia conferta"
1305	"Phyllodes 15–25 mm long, with midrib fine but evident; peduncles with a persistent basal bract"	"Acacia lineata"
1306	"Phyllodes obtuse (mucro inconspicuous and blunt), narrowly oblong to oblong-elliptic"	"Acacia blaxellii"
1306	"Phyllodes acute OR if obtuse then with a distinct, short, hard mucro"	1307
1307	"Phyllodes 1–2 cm long, straight, with midrib slightly excentric; gland inconspicuous, to 1 mm above pulvinus"	"Acacia excentrica"
1307	"Phyllodes 2–6 cm long, often shallowly recurved, with ±central midrib; glands 1–3 (often on slight projections), the lowermost 5–10 mm above pulvinus"	"Acacia ligustrina"
1308	"Phyllode 5–10 × 1–2.5 mm; heads 9–11-flowered (W.A.)"	"Acacia carnosula"
1308	"Phyllodes longer and/or wider than above; heads more than 11-flowered"	1309
1309	"Phyllodes narrowly oblong, with midrib absent or rather obscure, obtuse, with mucro absent or much-reduced (W.A.)"	1310
1309	"Phyllodes not narrowly oblong OR if so then midrib prominent and/or mucro distinct"	1312
1310	"Phyllodes subfleshy, wrinkled when dry; heads 40–70-flowered; stipules spinose, caducous; pods 8–12 mm wide (arid zone)"	"Acacia synchronicia"
1310	"Phyllodes coriaceous, ±smooth; heads less than 40-flowered; stipules not spinose; pods 3–4.5 mm wide (not arid zone)"	1311
1311	"Stipules caducous; phyllodes 4–7 mm wide, ±glaucous"	"Acacia saxatilis"
1311	"Stipules persistent, 1.5–3 mm long; phyllodes 2–3.5 mm wide, green"	"Acacia evenulosa"
1312	"Heads cream to pale lemon yellow; branchlets pruinose; phyllodes retuse to subretuse, 10–25 (–33) mm wide (W.A.)"	"Acacia chartacea"
1312	"Heads golden; other characters not combined as above"	1313
1313	"Branchlets minutely verruculose at least at extremities, not pruinose; phyllodes slightly to prominently undulate, 10–20 × 5–10 mm, l:w = 1.5–3; diffuse shrub with branches often prostrate (SW W.A.)"	"Acacia semicircinalis"
1313	"Characters not combined as above"	1314
1314	"Stipules persistent to subpersistent (sometimes only the thickened bases persisting), often spinose (W.A., except A. halliana)"	1315
1314	"Stipules early caducous"	1322
1315	"Phyllodes 10–20 × 2–5 mm, normally acute, mucronate by short, rigid points"	"Acacia excentrica"
1315	"Phyllode characters not combined as above"	1316
1316	"Peduncles surrounded at base by a dense tuft of hairs; phyllodes oblanceolate to linear-oblanceolate, thickly coriaceous, wrinkled when dry; stipules erect, 4–8 mm long"	"Acacia dermatophylla"
1316	"Peduncles glabrous at base; other characters not combined as above"	1317
1317	"Stipules spinose; branchlets commonly pruinose; phyllodes thinly coriaceous"	1318
1317	"Stipules not spinose; phyllodes often thickly coriaceous"	1320
1318	"Phyllodes 3–6 cm long, lanceolate to narrowly lanceolate"	"Acacia dempsteri"
1318	"Phyllodes 1–3 cm long, shape not as above"	1319
1319	"Pods straight; phyllodes normally 3–8 mm wide and l:w = 3–7, with midrib obscure or absent; erect shrub or tree"	"Acacia synchronicia"
1319	"Pods curved; phyllodes 7–15 mm wide, l:w = 1.2–3, with ±prominent midrib; shrub ±prostrate"	"Acacia ryaniana"
1320	"Phyllodes very glaucous, with thick yellow or greenish yellow margins; stipules 3–4 mm long"	"Acacia glaucissima"
1320	"Phyllodes green or grey-green; stipules 0.5–3 mm long"	1321
1321	"Phyllodes with upper margin 2-nerved (view phyllode edge-on), the nerves coalescing above the gland normally in the lower 1/3–1/2 of the phyllode (SW W.A.)"	"Acacia mutabilis"
1321	"Phyllodes with upper margin 1-nerved OR if 2-nerved then the nerves coalescing close to the base below the gland (S.A., N.S.W., Vic.)"	"Acacia halliana"
1322	"Phyllodes 7–17 × 2–5 mm, narrowly oblong to oblong-oblanceolate, with mucro distinct, excentric, rigid and ±pungent (W.A.)"	"Acacia camptoclada"
1322	"Phyllode characters not combined as above"	1323
1323	"Phyllodes thickly coriaceous and/or upper margin 2-nerved to about the middle (view phyllode edge-on), with lateral nerves ±absent"	1324
1323	"Phyllodes thinly coriaceous or subfleshy, with upper margin 1-nerved and lateral nerves present or absent"	1326
1324	"Phyllodes 3–5 mm wide, l:w = (3–) 5–14; gland 5–15 mm above pulvinus; branchlets not pruinose; peduncles 3–10 mm long (SW W.A.)"	"Acacia mutabilis"
1324	"Phyllode characters not combined as above"	1325
1325	"Branchlets variably pruinose; seed aril white (SW W.A.)"	"Acacia acoma"
1325	"Branchlets normally not pruinose; seed aril bright yellow or orange (SW W.A. to S.A.)"	"Acacia merrallii"
1326	"Phyllodes subfleshy, finely wrinkled when dry, with midrib and lateral nerves obscure or absent; gland 0–2 mm above pulvinus (arid zone: W.A.)"	"Acacia synchronicia"
1326	"Phyllode characters not combined as above (not arid zone)"	1327
1327	"Branchlets pruinose; phyllodes 15–40 mm long; inflorescences mostly simple (SW W.A.)"	"Acacia meisneri"
1327	"Branchlets not pruinose; phyllodes 10–20 mm long; inflorescences short racemes (S.A., N.S.W., Vic.)"	"Acacia brachybotrya"
1328	"Stipules spinose, 4–12 mm long; heads 30–50-flowered (all States except N.T., introduced in Tas. & probably SW W.A.)"	"Acacia paradoxa"
1328	"Stipules not as above"	1329
1329	"Phyllodes 2–5 × 0.5–1.5 mm, thick, nerveless, crowded, oblong to cuneate, ascending to erect; glabrous, resinous shrubs (SW W.A.)"	"Acacia sedifolia"
1329	"Characters not combined as above"	1330
1330	"Stipules foliaceous, 2–7 mm long; phyllodes shallowly sigmoid, mostly 7–16 × 1.5–3 mm, hairy; heads 27–33-flowered (SW W.A.)"	"Acacia crassistipula"
1330	"Stipules not foliaceous"	1331
1331	"Phyllodes 1–4 mm wide AND l:w 5 or more"	1332
1331	"Phyllodes some or all > 4 mm wide OR if not then l:w < 5"	1385
1332	"Phyllodes with 1 clearly excentric longitudinal nerve on each face (situated close to upper margin) AND 9–20 × 0.7–2.5 mm; peduncles with persistent basal bract"	1333
1332	"Phyllode characters not combined as above; peduncles with or without a basal bract"	1334
1333	"Branchlets appressed-hairy between the prominently raised resin-ribs; phyllodes normally kinked or bent upwards, with midrib prominently raised (Qld, N.S.W., Vic.)"	"Acacia flexifolia"
1333	"Branchlets and phyllodes not as above (S.A., Qld, N.S.W., Vic.)"	"Acacia lineata"
1334	"Phyllodes 9–17 cm long; peduncles 2–4 cm long, arranged in false terminal racemes; heads 40–55-flowered; viscid, spindly shrubs (SW W.A.)"	"Acacia glutinosissima"
1334	"Characters not combined as above"	1335
1335	"Stipules 2–6 mm long, linear to setaceous (SW W.A.)"	1336
1335	"Stipules caducous or < 2 mm long"	1337
1336	"Glabrous, ±viscid shrub, 1–3 (–5) m high; phyllodes linear, 10–30 × 1–1.5 mm"	"Acacia rossei"
1336	"Hairy, non-viscid, prostrate or low subshrub to 0.5 m high; phyllodes not as above, ±undulate"	"Acacia crispula"
1337	"Phyllodes punctate by shallow, circular resinous pits (observe carefully at ×10 mag.) (not W.A., N.T. or Tas.)"	1338
1337	"Phyllodes not resinous-punctate as above (sometimes puncticulate by non-resinous stomata)"	1343
1338	"Heads 10–20-flowered; phyllode margins ±appressed-puberulous"	1339
1338	"Heads 20–60-flowered; phyllode margins glabrous or appressed-puberulous"	1340
1339	"Phyllodes 5–10 cm long, narrowly linear to linear-elliptic (N.S.W., Vic.)"	"Acacia cognata"
1339	"Phyllodes 1.5–2.5 (–3.5) cm long, narrowly elliptic to lanceolate (Vic.)"	"Acacia howittii"
1340	"Phyllodes 1-nerved on each face"	1341
1340	"Phyllodes 2-nerved on each face (the second nerve sometimes indistinct)"	1342
1341	"Branchlets prominently resin-ribbed and glabrous; heads 30–45-flowered (N.S.W., Vic.)"	"Acacia ausfeldii"
1341	"Characters not combined as above (Vic.)"	"Acacia leprosa"
1342	"Branchlets ±appressed-puberulous to subglabrous; phyllodes with minor nerves few and forming an often obscure, longitudinal reticulum (S.A., SE Qld, N.S.W., Vic.)"	"Acacia montana"
1342	"Branchlets glabrous; phyllodes with minor nerves absent or if present then not as above (S.A., SE Qld, N.S.W., A.C.T., Vic.)"	"Acacia verniciflua"
1343	"Phyllodes 5–20 mm long"	1344
1343	"Phyllodes some or all > 20 mm long"	1361
1344	"Phyllodes with 2 longitudinal nerves on each face AND peduncles with a small, persistent bract at base"	1345
1344	"Phyllodes nerveless or 1-nerved on each face OR if 2-nerved (sometimes in A. johnsonii) then peduncles ebracteate at base"	1347
1345	"Peduncles densely light golden appressed-puberulous; phyllodes 1–4 mm wide, with minor nerves absent or if present then not anastomosing (S.A., N.S.W., Vic.)"	"Acacia wilhelmiana"
1345	"Peduncles glabrous or white-puberulous"	1346
1346	"Phyllodes 2 mm or more wide, with minor nerves sparingly and longitudinally anastomosing; peduncles puberulous or glabrous (S.A., Qld, N.S.W., Vic.)"	"Acacia montana"
1346	"Phyllodes 0.5–1 (–1.5) mm wide, with minor nerves absent; peduncles glabrous (S.A.)"	"Acacia menzelii"
1347	"Branchlets glabrous"	1348
1347	"Branchlets hairy, at least towards apices (observe at ×10 mag.)"	1354
1348	"Peduncles 2–3 mm long; heads 8- or 9-flowered (SW W.A.)"	"Acacia brachypoda"
1348	"Peduncles 4–18 mm long; heads 10–35-flowered"	1349
1349	"Phyllodes glaucous (at least when young); heads in 1 (or 2)-headed racemes (raceme axis 0.5–1 mm long), with bract persistent at base (SW W.A.)"	"Acacia profusa"
1349	"Phyllodes not glaucous; heads not in racemes, ebracteate at base (not SW W.A.)"	1350
1350	"Heads 10–20-flowered; pods woody, ±straight, narrowed at base, opening elastically from apex (northern W.A., N.T., Qld)"	"Acacia nuperrima"
1350	"Heads 20–35-flowered; pods not as above"	1351
1351	"Sepals united for not more than 1/2 their length (N.T.)"	"Acacia helmsiana"
1351	"Sepals united for more than 1/2 their length (Qld)"	1352
1352	"Phyllodes rounded at apex; mucro absent or rudimentary"	"Acacia johnsonii"
1352	"Phyllodes narrowed to a distinct, short mucro"	1353
1353	"Phyllodes gradually narrowed to a short, distinct pulvinus, erect; pods 10–12 mm wide"	"Acacia arbiana"
1353	"Phyllodes abruptly narrowed to ±sessile base, patent to inclined; pods 5–6 mm wide"	"Acacia resinicostata"
1354	"Heads pale yellow to cream, 11–17-flowered; inflorescences mostly 1–3-headed racemes with axes 0.5–3 mm long; prostrate shrub (SW W.A.)"	"Acacia maxwellii"
1354	"Heads golden to bright yellow; inflorescences simple; erect shrubs (not SW W.A.)"	1355
1355	"Heads less than 20-flowered; peduncle hairy, with a persistent, small basal bract (Qld, N.S.W.)"	"Acacia lineata"
1355	"Heads 20–38-flowered; peduncle ebracteate at base"	1356
1356	"Pods 3–5 mm wide; seeds longitudinal; phyllodes often > 15 mm long, glabrous or subglabrous (Qld, N.S.W.)"	1357
1356	"Pods 8–15 mm wide; seeds transverse; phyllodes often hairy to some degree"	1358
1357	"Phyllodes 1–2 mm wide, with lower and upper margins of equal width"	"Acacia johnsonii"
1357	"Phyllodes 0.6–1 mm wide, with lower margin clearly broader than upper margin (view edge-on)"	"Acacia burbidgeae"
1358	"Phyllodes narrowly linear, 8–16 × 0.6–1 mm"	1359
1358	"Phyllodes linear-oblanceolate to narrowly oblong-elliptic, 5–12 × 1–1.6 mm (Qld, N.S.W.)"	1360
1359	"Peduncles hairy (N.S.W.)"	"Acacia gordonii"
1359	"Peduncles glabrous (Qld)"	"Acacia arbiana"
1360	"Phyllodes glabrous or with scattered, ±spreading, short hairs; heads 20–25-flowered"	"Acacia conferta"
1360	"Phyllodes with rather long, fine, weak, ±appressed hairs; heads 27–38-flowered"	"Acacia mariae"
1361	"Pods woody, opening elastically from apex; seeds transverse to oblique in pods; heads 10–20-flowered (northern Aust., N of 17ºS)"	1362
1361	"Pods not as above (southern and eastern Aust., sometimes arid zone: S of 17ºS)"	1363
1362	"Calyx divided almost to base (N.T.)"	"Acacia yirrkallensis"
1362	"Calyx shortly divided (W.A., N.T., Qld)"	"Acacia nuperrima"
1363	"Heads sessile; phyllodes linear, 40–45 × 1.3–1.6 mm; branchlets sericeous between ribs (SW W.A.)"	"Acacia epedunculata"
1363	"Heads on peduncles at least 2 mm long"	1364
1364	"Heads 8- or 9-flowered, with peduncles 2–3 mm long; phyllodes narrowly linear, 20–50 × 0.7–1.4 mm (SW W.A.)"	"Acacia brachypoda"
1364	"Heads more than 10-flowered, with peduncles normally > 3 mm long"	1365
1365	"Heads axillary (not in racemes) AND peduncles ebracteate at base (be careful not to interpret stipules as basal peduncular bracts); plants resinous and/or viscid to some degree (Qld & N.S.W. and arid zone of W.A. & N.T.)"	1366
1365	"Characters not combined as above (heads in short racemes OR if axillary then with a small, persistent basal bract and/or plants not resinous)"	1374
1366	"Phyllodes 1–2 mm wide AND not more than 5 cm long; branchlets hairy or glabrous"	1367
1366	"Phyllodes > 2 mm wide OR if narrower then > 5 cm long; branchlets glabrous"	1370
1367	"Phyllodes with lower margin clearly broader than upper margin (view edge-on) (Qld, N.S.W.)"	"Acacia burbidgeae"
1367	"Phyllodes with margins of equal width"	1368
1368	"Branchlets and peduncles glabrous; phyllodes with small gland 1–7 mm above pulvinus (Qld)"	"Acacia gnidium"
1368	"Branchlets and peduncles hairy or glabrous; phyllodes with gland absent or < 1 mm above pulvinus (Qld, N.S.W.)"	1369
1369	"Phyllodes 1–2 mm wide, flat"	"Acacia johnsonii"
1369	"Phyllodes 0.5–1 mm wide, subterete to flat"	"Acacia pilligaensis"
1370	"Heads 30–60-flowered; peduncles 6–30 mm long; pods c. 10 mm wide with transverse to oblique seeds (W.A., N.T.)"	1371
1370	"Heads 20–30-flowered; peduncles 3–12 mm long; pods 3–8 mm wide (Qld, N.S.W.)"	1372
1371	"Spindly, open shrub with 1 or 2 main stems from base; phyllodes 2.5–6 cm long, 3–6 mm wide, with l:w = 7–13 (W.A., N.T.)"	"Acacia jensenii"
1371	"Bushy shrub normally with several main stems from base; phyllodes 6–10 cm long, 1–3.5 mm wide, with l:w = 20–100 (W.A.)"	"Acacia sabulosa"
1372	"Phyllodes 6–10 cm long with l:w = 30–40; peduncles 3–5 mm long (Qld)"	"Acacia hockingsii"
1372	"Phyllodes < 6 cm long OR if longer than other characters not combined as above"	1373
1373	"Phyllodes with l:w = 4–14, and margins sparsely tuberculate; pods (3–) 5–8 mm wide (Qld, N.S.W.)"	"Acacia ixodes"
1373	"Phyllodes with l:w = 15–25, and margins not tuberculate; pods 3.5 mm wide (Qld)"	"Acacia eremophiloides"
1374	"Phyllodes 2-nerved on each face; plants resinous to some degree"	1375
1374	"Phyllodes 1-nerved on each face; plants resinous or not"	1378
1375	"Phyllodes 5–10 cm long, c. 1 mm wide (S.A.)"	"Acacia gracilifolia"
1375	"Phyllodes < 5 cm long, not filiform"	1376
1376	"Peduncles densely light golden appressed-puberulous; phyllodes 1–4 mm wide, with minor nerves absent or if present then not anastomosing (S.A., N.S.W., Vic.)"	"Acacia wilhelmiana"
1376	"Peduncles glabrous or white-puberulous"	1377
1377	"Phyllodes 2 mm or more wide, with minor nerves sparingly and longitudinally anastomosing; peduncles puberulous or glabrous (S.A., Qld, N.S.W., Vic.)"	"Acacia montana"
1377	"Phyllodes 0.5–1 (–1.5) mm wide, with minor nerves absent; peduncles glabrous (S.A.)"	"Acacia menzelii"
1378	"Peduncles with short, patent hairs; subshrub 0.4–0.7 m high with slender, glabrous stems (SW W.A.)"	"Acacia insolita"
1378	"Peduncles glabrous or appressed-hairy OR if hairs patent then branchlets hairy"	1379
1379	"Peduncles 1 or 2 arising directly from within axils of phyllodes"	1380
1379	"Heads all or mostly in 1–3-headed, short but clearly discernible racemes"	1381
1380	"Branchlets and peduncles glabrous; phyllodes 20–40 mm long, 0.7–1.5 mm wide (S.A.)"	"Acacia nematophylla"
1380	"Branchlets and peduncles hairy; phyllodes 15–25 mm long, 2–3 mm wide (Qld, N.S.W.)"	"Acacia lineata"
1381	"Phyllode midrib prominent and resinous; raceme axes and peduncles resinous and with dense, white appressed hairs covering entire surface (SW W.A.)"	"Acacia diaphana"
1381	"Phyllode midrib obscure and/or not resinous; raceme axes and peduncles glabrous or if appressed-hairy then not resinous"	1382
1382	"Branchlets hairy; heads pale yellow to cream, 11–17-flowered; peduncles 10–20 mm long; shrubs prostrate (SW W.A.)"	"Acacia maxwellii"
1382	"Branchlets glabrous OR if hairy then other characters not combined as above (heads golden, shrubs erect)"	1383
1383	"Phyllodes rounded-obtuse; raceme axes with persistent bract scars at base; peduncles glabrous; calyx ±truncate (W.A., S.A., Vic.)"	"Acacia cupularis"
1383	"Phyllodes normally acute to short-acuminate with delicate, curved to uncinate points; raceme axes ebracteate at base; calyx dissected"	1384
1384	"Peduncles, raceme axes and new shoots glabrous (S.A., N.S.W., Vic.)"	"Acacia calamifolia"
1384	"Peduncles, raceme axes and new shoots hairy to some degree (S.A., Vic.)"	"Acacia × grayana"
1385	"Phyllodes 15–25 cm × 6–14 mm AND branchlets pruinose (NW W.A.)"	"Acacia kenneallyi"
1385	"Phyllodes < 15 cm long OR if not then branchlets not pruinose"	1386
1386	"Seeds oblique in pods; pods ±woody, opening elastically from apex and normally narrowed at base; phyllode obscurely nerved, with surface commonly finely longitudinally wrinkled when young (NW & N Aust.)"	1387
1386	"Characters not combined as above"	1391
1387	"Phyllodes 3–6 (–9) × 1.5–3 (–4) mm, with mucro ±setose; bracteoles acuminate (W.A., N.T.)"	"Acacia setulifera"
1387	"Phyllodes larger than above OR if not then other characters not combined as above"	1388
1388	"Phyllodes (4–) 7–20 (–35) mm long, (1–) 1.5–3 (–5) mm wide, l:w = (2–) 4–6 (–25), rather spreading, shallowly to prominently recurved; heads 10–23-flowered, small (W.A., N.T., Qld)"	"Acacia nuperrima"
1388	"Phyllodes not as above, heads more than 20-flowered, or if not, the flower buds large"	1389
1389	"Heads 7–25-flowered; buds large and widely spreading; petals striate; phyllode mucro knob-like to conical and erect (W.A., N.T.)"	"Acacia stellaticeps"
1389	"Heads more than 20-flowered; buds not widely spreading; petals with midrib; phyllode mucro partially or wholly inflexed-appressed to phyllode margin, at least on young phyllodes"	1390
1390	"Phyllodes mostly > 2 cm long; heads 7–12 mm diam., with 40–60 flowers; peduncles c. 1 mm diam. (W.A., N.T.)"	"Acacia sp. Kununurra (G.Lullfitz 6195)"
1390	"Phyllodes < 2 cm long; heads (at anthesis) 5–9 mm diam., 20–50-flowered; peduncles 0.5–0.7 mm diam. (W.A., N.T.)"	"Acacia translucens"
1391	"Phyllodes punctate by shallow, circular resinous pits (observe carefully at ×10 mag.) AND 1–15 cm long; viscid plants (not W.A., N.T. or Tas.)"	1392
1391	"Phyllodes not resinous-punctate as above (but sometimes puncticulate by non-resinous stomata) OR < 1 cm long"	1396
1392	"Glands 2 or 3 along upper margin or phyllodes, the lowermost 0–5 mm above pulvinus; plants glabrous; phyllodes slightly roughened, obscurely punctate (S.A., ?Vic.)"	"Acacia dodonaeifolia"
1392	"Glands single, 0–8 mm above pulvinus; plants glabrous or with hairy phyllode margins, branchlet ribs or peduncles"	1393
1393	"Phyllodes 1-nerved on each face, distinctly punctate"	1394
1393	"Phyllodes 2-nerved on each face (second nerve sometimes not well developed)"	1395
1394	"Branchlets appressed-puberulous or glabrous on the non-resinous ribs (Qld, N.S.W., Vic.)"	"Acacia leprosa"
1394	"Branchlets glabrous, prominently resin-ribbed (N.S.W., Vic.)"	"Acacia ausfeldii"
1395	"Phyllodes obscurely punctate, 10–40 × 2–7 mm, with minor nerves few and forming an often obscure, longitudinal reticulum; heads c. 25-flowered (S.A., SE Qld, N.S.W., Vic.)"	"Acacia montana"
1395	"Phyllodes distinctly punctate, 20–150 × 2–30 mm, with minor nerves absent or if present then not as above; heads 30–60-flowered (S.A., SE Qld, N.S.W., A.C.T., Vic., Tas.)"	"Acacia verniciflua"
1396	"Phyllodes with prominent, peg-like tubercles at least on lower margin, 10–30 mm long; heads 10–20-flowered, pale yellow to almost white (Qld, N.S.W.)"	"Acacia hispidula"
1396	"Characters not combined as above"	1397
1397	"Phyllodes with 2 main longitudinal nerves on each face with minor nerves forming a reticulum, 1–10 cm long AND plants resinous and/or viscid"	1398
1397	"Phyllodes nerveless or 1-nerved on each face OR if 2-nerved then not reticulate AND/OR plants not resinous or viscid"	1402
1398	"Peduncles with a persistent basal bract, puberulous or glabrous, 3–9 mm long; phyllodes 1–4 cm long (not arid zone)"	1399
1398	"Peduncles ebracteate at base, glabrous, 6–30 mm long (arid zone)"	1400
1399	"Pods ±straight, usually villous; phyllode reticulum often obscure (S.A., SE Qld, N.S.W., Vic.)"	"Acacia montana"
1399	"Pods strongly curved to openly coiled, glabrous; phyllode reticulum evident at ×10 mag. (SW W.A.)"	"Acacia cassicula"
1400	"Phyllodes narrowly linear, 5–7 cm long, 5–6 mm wide, with l:w = 10–15 (W.A.)"	"Acacia sabulosa"
1400	"Phyllodes not narrowly linear, 1.5–8.5 cm long, 4–18 mm wide, with l:w = 2–11"	1401
1401	"Heads large (9–13 mm diam. when dry), 40–60-flowered; phyllodes (4–) 5–7 (–8.5) cm long, (6–) 10–20 mm wide, thickly coriaceous and coarsely reticulately nerved (W.A., N.T., S.A., Qld)"	"Acacia dictyophleba"
1401	"Heads smaller than above (5–6 (–8) mm diam. when dry), 30–40-flowered; phyllodes 1.5–4 (–5) cm long, (3–) 4–11 mm wide, generally thinner and less coarsely nerved than above (W.A., N.T., S.A., Qld)"	"Acacia melleodora"
1402	"Heads 35–60-flowered, golden; bracteoles acuminate; phyllodes 10–20 × 5–10 mm, hairy over entire surface; stipules 1.5–3.5 mm long (NW W.A.)"	"Acacia gregorii"
1402	"Characters not combined as above"	1403
1403	"Heads ±obloid, golden or lemon yellow; phyllodes 5–15 mm wide, hairy; pod 8–14 mm wide, with dense, ferruginous to silvery-ferruginous hairs (N.S.W., Vic.)"	1404
1403	"Heads globular OR if obloid then other characters not combined as above; pods not as above"	1405
1404	"Phyllodes 10–20 × 5–11 mm, with straight, appressed hairs (N.S.W.)"	"Acacia costiniana"
1404	"Phyllodes 15–30 (–60) × 6–15 mm, with curved or crisped and spreading or appressed hairs (N.S.W., Vic.)"	"Acacia lucasii"
1405	"Phyllodes 6–14 cm long, 6–18 mm wide, falcate, acuminate; peduncles 1–2.5 cm long; heads 40–60-flowered; pods c. 13 mm wide, ±woody (S.A.)"	"Acacia confluens"
1405	"Characters not combined as above"	1406
1406	"Heads white, cream or very pale yellow (rarely golden in A. orbifolia from SW W.A.); phyllodes 5–30 mm long"	1407
1406	"Heads golden or bright lemon yellow"	1416
1407	"Upper branchlets whitish; petals normally glabrous; phyllodes often ±'triangular' (i.e. obdeltate to cuneate), normally glabrous or with hairs confined to margins (SW W.A.)"	1408
1407	"Upper branchlets not white; petals with distinct, spreading to erect hairs, rarely glabrous; phyllodes hairy or glabrous (hairs not confined to margins), not 'triangular', often undulate"	1410
1408	"Stipules 2–3 mm long, acuminate; bracteoles long-acuminate; phyllodes 7–10 × 2–3.5 mm, narrowly oblong-oblanceolate to cuneate"	"Acacia aristulata"
1408	"Characters not combined as above"	1409
1409	"Phyllodes normally 4–7 × 2.5–5 mm; peduncles 3–10 mm long; heads 10–16-flowered"	"Acacia bidentata"
1409	"Phyllodes 8–20 × 6–17 mm; peduncles 10–20 mm long; heads 20–32-flowered"	"Acacia orbifolia"
1410	"Pods 4–7 mm wide (SW W.A.)"	1411
1410	"Pods 10–20 mm wide (N.S.W.)"	1412
1411	"Peduncles (6–) 10–25 mm long; phyllodes 10–30 mm long"	"Acacia crispula"
1411	"Peduncles 3.5–6 mm long; phyllodes 5–16 mm long"	"Acacia shuttleworthii"
1412	"Phyllode l:w greater than 2 or if less then some phyllodes large (greater than 30 mm long) and broadly elliptic to broadly obovate, moderately to densely hairy; lateral nerve at less than 40º to the mid-nerve"	"Acacia uncinata"
1412	"Phyllode l:w < 2, if phyllodes large (greater than 30 mm long) then ovate and sparsely hairy to sub glabrous; lateral nerves at greater than 45º to mid-nerve"	1413
1413	"Tall open shrubs, mostly > 1.5 m high; phyllodes mostly more than or equal to 16 mm long"	"Acacia undulifolia"
1413	"Low bushy shrubs, mostly < 1.3 m high; phyllodes mostly < 16 mm long"	1414
1414	"Inflorescences usually pale yellow; branchlets and pulvini with an indumentum of appressed short hairs with longer spreading hairs; phyllodes subglossy green, markedly undulate with lamina usually twisted"	"Acacia clandullensis"
1414	"Inflorescences cream-coloured; branchlets and pulvini with uniform length spreading hairs, sometimes slightly inclined or reflexed; phyllodes dull grey-green, flat or slightly undulate, with lamina flat or sometimes convex but not twisted"	1415
1415	"Hairs on buds yellow to golden; phyllodes densely or moderately hairy; branchlets with hairs spreading to slightly inclined"	"Acacia aureocrinita"
1415	"Hairs on buds grey or fawn-coloured; phyllodes usually sparsely hairy or almost glabrous; branchlets with hairs mostly slightly reflexed"	"Acacia cremiflora"
1416	"Phyllodes 5–13 × 3–6 mm, erect, asymmetrically ovate to ovate-elliptic, 2-nerved on each face; shrub ±viscid (S.A., Vic.)"	"Acacia glandulicarpa"
1416	"Characters not combined as above"	1417
1417	"Phyllodes < 10 mm long OR shape ±'triangular' (i.e. asymmetrically obdeltate to cuneate)"	1418
1417	"Phyllode at least 10 mm long AND shape not 'triangular'"	1422
1418	"Phyllodes ±cuneate with some or all > 6 mm long; heads 23–26-flowered; plants not resinous (SW W.A.)"	"Acacia cuneifolia"
1418	"Characters not combined as above"	1419
1419	"Plants ±resinous; phyllodes glabrous, nerveless or with one, central, main longitudinal nerve"	1420
1419	"Plants not resinous; phyllodes often hairy, inequilateral with main nerve near lower margin, and often secondary nerves diverging from base"	1421
1420	"Phyllodes broadest near or below middle; peduncles ebracteate at base (SW W.A.)"	"Acacia brachyclada"
1420	"Phyllodes broadest above middle; peduncles with persistent basal bract (S.A.)"	"Acacia rhetinocarpa"
1421	"Peduncles normally glabrous; seeds not mottled (SW W.A., S.A., Qld, N.S.W.)"	"Acacia pravifolia"
1421	"Peduncles hairy; seeds mottled (SW W.A.)"	"Acacia ericksoniae"
1422	"Phyllodes 10–25 × 2.5–7 mm, ±fleshy, rounded-obtuse; heads 10–17-flowered; flower buds subacute to apiculate; pods 4–5 mm wide (SW W.A.)"	"Acacia pinguiculosa"
1422	"Characters not combined as above"	1423
1423	"Phyllodes openly reticulate between the 2 longitudinal nerves, 15–20 × 5–7 mm; peduncles 3–5 mm long (SW W.A.)"	"Acacia cassicula"
1423	"Characters not combined as above"	1424
1424	"Phyllodes 2-nerved on each face, usually 6–23 mm wide with l:w 2–5; plants not resinous; aril orange or red"	1425
1424	"Phyllodes 1-nerved on each face OR if 2-nerved (rare) then other characters not combined as above"	1426
1425	"Heads 16–23-flowered, deep golden; peduncles and young growth normally glabrous (arid zone: W.A., N.T., western Qld)"	"Acacia bivenosa"
1425	"Heads 30–55-flowered, lemon yellow; peduncles and young growth hairy (NW W.A.)"	"Acacia startii"
1426	"Plants viscid; peduncles with a persistent basal bract; phyllodes with 2 or 3 glands along upper margin (S.A., ?Vic.)"	"Acacia dodonaeifolia"
1426	"Plants not viscid OR if so then peduncles ebracteate at base"	1427
1427	"Phyllodes 6–17.5 cm long, 6–15 mm wide, obtuse, tapered at base; branchlets pendulous, flexuose, flat or angled at extremities; plants not resinous (S.A.)"	"Acacia gillii"
1427	"Characters not combined as above"	1428
1428	"Phyllodes 10–25 × 6–20 mm with l:w = 1–3; inflorescences simple; plants not resinous; pods 12–20 mm wide with transverse seeds (Qld, N.S.W.)"	1429
1428	"Phyllodes not as above OR if so (sometimes in A. brachybotrya) then inflorescences short-racemose and pods 4–10 mm wide with longitudinal seeds"	1430
1429	"Branches glaucous and downwards arching; phyllode bases truncate or asymmetrically cordate; heads mostly (30–) 40- or more-flowered"	"Acacia sertiformis"
1429	"Branches non-glaucous, erect and often curved upwards; phyllode bases acute or obtuse; heads mostly 20–32-flowered"	"Acacia piligera"
1430	"Inflorescences simple (i.e. heads not in racemes); plants sometimes resinous"	1431
1430	"Inflorescences comprising short but clearly discernible racemes"	1434
1431	"Phyllodes > 6 mm wide; plants not resinous (southern W.A. & S.A.)"	"Acacia anceps"
1431	"Phyllodes 1–6 mm wide; plants ±resinous"	1432
1432	"Heads 20–30-flowered; pods 3–8 mm wide with longitudinal seeds; phyllodes 2–5 cm long with l:w 4–14 (Qld, N.S.W.)"	"Acacia ixodes"
1432	"Heads 30–60-flowered; pods c. 10 mm wide with transverse to oblique seeds (arid zone: W.A., N.T.)"	1433
1433	"Spindly open shrub with 1 or 2 main stems from base; phyllodes 2.5–6 cm long, 3–6 mm wide with l:w = 7–13 (W.A., N.T.)"	"Acacia jensenii"
1433	"Bushy shrub normally with several main stems from base; phyllodes 5–7 cm long, 5–6 mm wide with l:w = 10–15 (W.A.)"	"Acacia sabulosa"
1434	"Phyllodes 7–17 × 2–5 mm, with a short but distinct, excentric, ±pungent mucro; branchlets often slightly viscid or vernicose; funicle exarillate (SW W.A.)"	"Acacia camptoclada"
1434	"Phyllodes and branchlets not as above; funicle arillate"	1435
1435	"Phyllodes 10–30 (–40) × 4–13 mm with l:w = 1.5–3.5, obtuse to subacute, hairy or glabrous (S.A., N.S.W., Vic.)"	"Acacia brachybotrya"
1435	"Phyllode characters not combined as above"	1436
1436	"Phyllodes acute to short-acuminate with delicate, curved to uncinate points; calyx dissected (S.A., N.S.W., Vic.)"	"Acacia calamifolia"
1436	"Phyllodes rounded-obtuse; calyx ±truncate (W.A., S.A., Vic.)"	"Acacia cupularis"
1437	"Phyllodes sharply pungent with needle-like points that readily pierce the skin upon touch, sometimes glandular-pubescent"	1438
1437	"Phyllodes innocuous (but commonly with a slender mucro or narrowed to hard, rigid points which do not readily pierce the skin upon touch), never glandular-pubescent"	1482
1438	"Phyllodes 2–20 mm long AND obviously inequilateral (i.e. upper margin clearly rounded or angled and lower margin ±straight), often ±triangular in outline"	1439
1438	"Phyllodes some or all > 20 mm long OR if not then ±symmetrical and not triangular"	1455
1439	"Phyllodes clearly sessile (arising from a broad base) AND 3- or 4-nerved on each face without anastomoses in between (SW W.A.)"	1440
1439	"Phyllode characters not combined as above"	1442
1440	"Stipules caducous; phyllodes 1–5 cm long, 1–7 mm wide"	"Acacia latipes"
1440	"Stipules persistent, acicular, 1–2.3 mm long; phyllodes 3.5–9 (–15) mm long, 2–5 mm wide"	1441
1441	"Branchlet and pod indumentum appressed"	"Acacia adnata"
1441	"Branchlet and pod indumentum spreading"	"Acacia comans"
1442	"Peduncles ebracteate at base; stipules persistent, often prominent; plants often viscid by indumentum of gland-tipped hairs (northern Aust.)"	1443
1442	"Peduncles with ±persistent, brown bracts at base; stipules normally caducous; plants without gland-tipped hairs (not northern Aust.)"	1449
1443	"Most phyllodes broadest below middle (W.A.)"	1444
1443	"Most phyllodes broadest at or above middle"	1445
1444	"Phyllodes 15–16 × 5.5–7 mm; seeds transverse"	"Acacia deltoidea"
1444	"Phyllodes 5–10 × 1.5–4.5 mm long; seeds longitudinal"	"Acacia adenogonia"
1445	"Branchlets tomentose-villous, with hairs crisped and none gland-tipped; phyllodes broadly obdeltate, 4–15 × 4–15 mm (N.T.)"	"Acacia sublanata"
1445	"Branchlets other than tomentose-villous, gland-tipped hairs present; phyllodes not broadly obdeltate"	1446
1446	"Calyx with up to 11 acuminate lobes, corolla 7- or 8-lobed (N.T.)"	"Acacia stipulosa"
1446	"Calyx and corolla regularly 5-merous"	1447
1447	"Branchlets with long, gland-tipped hairs and shorter, antrorsely curved hairs (W.A., N.T.)"	"Acacia froggattii"
1447	"Branchlets glandular-puberulous, the hairs very short and patent but sometimes with longer hairs intermixed (W.A.)"	1448
1448	"Phyllodes 1.5–2 mm wide, inequilaterally oblong-oblanceolate, strongly rounded at apex"	"Acacia vincentii"
1448	"Phyllodes 4–6 mm wide, inequilaterally elliptic or obdeltate"	"Acacia deltoidea"
1449	"Phyllodes 1.5–4 mm wide, l:w = 2–6 (–14), lanceolate to lanceolate-elliptic (broadest at or below middle)"	1450
1449	"Phyllode characters not combined as above"	1451
1450	"Phyllodes with the most prominent longitudinal nerve situated near lower margin; pods strongly curved to openly coiled (SW W.A., N.S.W., Qld)"	"Acacia amblygona"
1450	"Phyllodes with the most prominent longitudinal nerve ±central; pods tightly coiled (SW W.A.)"	"Acacia lanceolata"
1451	"Petals striate; pods terete, striate, red-brown; phyllodes 10–20 × 7–10 (–15) mm (SW W.A.)"	"Acacia dilatata"
1451	"Petals not striate; pods not as above"	1452
1452	"Phyllodes very pungent by a straight, rigid cusp 1–3 mm long, often acuminate (SW W.A.)"	1453
1452	"Phyllodes not as above"	1454
1453	"Branchlets hairy; pods coiled"	"Acacia flabellifolia"
1453	"Branchlets glabrous; pods undulate"	"Acacia scalena"
1454	"Phyllodes cuneate to obtriangular, 3–11 × 1.5–5 mm, l:w = 1.5–3.5; pods openly 1–11/2-coiled (SW W.A.)"	"Acacia sphenophylla"
1454	"Phyllode characters not combined as above; pods rather tightly coiled and irregularly twisted (W.A., S.A., Qld, N.S.W.)"	"Acacia pravifolia"
1455	"Flowers 3- or 4-merous"	1456
1455	"Flowers 5-merous"	1458
1456	"Phyllodes 3.5–13 mm wide (SW W.A.)"	"Acacia neurophylla"
1456	"Phyllodes 1–2 mm wide"	1457
1457	"Heads 2–6-flowered (Tas.)"	"Acacia axillaris"
1457	"Heads 6–15-flowered (S.A., N.S.W.)"	"Acacia rhigiophylla"
1458	"Phyllodes up to 30 mm long AND uniformly and obviously recurved (SW W.A.)"	1459
1458	"Phyllodes > 30 mm long OR if not, then ±straight"	1460
1459	"Branchlets hairy; stipules not spinose"	"Acacia curvata"
1459	"Branchlets glabrous; stipules ±spinose (sharply or coarsely pungent)"	"Acacia campylophylla"
1460	"Heads sessile, 5–15-flowered; pods 6–10 mm wide; aril yellow-orange and large; phyllodes mostly 25–105 × 3–15 mm (all mainland States, mostly arid zone)"	"Acacia oswaldii"
1460	"Characters not combined as above (heads normally pedunculate and more than 15-flowered)"	1461
1461	"Petals finely striate; peduncles 10–24 mm long; viscid shrub (northern W.A., N.T., Qld)"	"Acacia phlebocarpa"
1461	"Characters not combined as above"	1462
1462	"Phyllodes with 3 or 4 longitudinal nerves on each face, sessile or pulvinate"	1463
1462	"Phyllodes with more than 4 longitudinal nerves on each face, pulvinate"	1473
1463	"Heads obloid; branchlets glabrous; phyllodes c. 1.5 mm wide; pods 5–8 mm wide (W.A.)"	"Acacia subsessilis"
1463	"Heads globular OR if obloid then other characters not combined as above"	1464
1464	"Sepals 1/2–3/4-united"	1465
1464	"Sepals free (SW W.A.)"	1466
1465	"Phyllodes 1–3 mm; heads 16–20-flowered; decumbent shrub to 0.3 m high (N.S.W.)"	"Acacia bynoeana"
1465	"Phyllodes 3–7 (–11) mm wide; heads 20–30-flowered; erect shrub 1–2 m high (N.S.W., A.C.T., Vic.)"	"Acacia lanigera"
1466	"Phyllodes ±sessile (pulvinus absent or to 0.5 mm long)"	1467
1466	"Phyllodes pulvinate (pulvinus distinct yet short, c. 1 mm long)"	1470
1467	"Phyllodes 7–22 × c. 1 mm , often reflexed; branchlets with dense, straight, ±patent hairs"	"Acacia declinata"
1467	"Characters not combined as above"	1468
1468	"New shoots minutely woolly and bearing united stipules; pulvinus discernible but not well developed, 0.2–0.5 mm long, yellow"	"Acacia benthamii"
1468	"New shoots glabrous or with straight hairs; stipules free; pulvinus absent"	1469
1469	"Phyllodes very rigid, with strongly raised nerves (normally from inland habitats)"	"Acacia latipes"
1469	"Phyllodes thinly coriaceous to subrigid, with nerves plane or slightly raised (normally coastal and near-coastal habitats)"	"Acacia cochlearis"
1470	"Phyllodes c. 10 × 2 mm, deflexed; branchlets minutely woolly; heads ±sessile"	"Acacia sessilis"
1470	"Characters not combined as above"	1471
1471	"Peduncles 2.5–5.5 mm long, glabrous; phyllodes 20–45 × 2–4 mm; stipules united (view new shoots), caducous (SW W.A.)"	"Acacia benthamii"
1471	"Peduncles 7–20 mm long; stipules free, persistent"	1472
1472	"Phyllodes 1–1.8 mm wide, straight; branchlets with obscure appressed hairs embedded in resin"	"Acacia cavealis"
1472	"Phyllodes 2–3.5 mm wide, ±sigmoidally curved or straight; branchlets with spreading hairs or glabrous"	"Acacia ridleyana"
1473	"Stipules spinose, 0.5–3 mm long; phyllodes 13–40 mm long; peduncles 4–11 mm long (W.A.)"	1474
1473	"Stipules not spinose, often caducous"	1475
1474	"Branchlets hairy; phyllode nerves very close together"	"Acacia formidabilis"
1474	"Branchlets glabrous (ignore phyllode axils); phyllode nerves not close together"	"Acacia unguicula"
1475	"Inflorescences 2–5-headed, condensed racemes; peduncles 5–12 mm long; phyllodes 5–13 cm long, 2–4 mm wide and (at least when young) densely appressed-hairy (Qld, N.S.W.)"	"Acacia cana"
1475	"Inflorescences simple; other characters not combined as above"	1476
1476	"Phyllodes narrowly linear, 10–15 cm long, 1–1.8 mm wide, glabrous (except when young); peduncles 1–1.5 mm long (Qld)"	"Acacia argyrotricha"
1476	"Phyllodes < 10 cm long"	1477
1477	"Phyllodes nerves not close together (inter-nerve distance twice width of nerve); sepals united (N.S.W., A.C.T., Vic.)"	"Acacia lanigera"
1477	"Phyllodes nerves very close together; sepals normally free (SW W.A.)"	1478
1478	"Phyllodes 18–25 × 3–6 mm, inequilateral, with upper margin curved with a slight gland-angle near middle; pulvinus encased in often dark-coloured resin"	"Acacia resinistipulea"
1478	"Phyllodes not as above"	1479
1479	"Peduncles 4–11 mm long; sepals free"	1480
1479	"Peduncles 0.5–1.5 mm long; sepals free or united"	1481
1480	"Phyllodes 30–65 × 3–5 mm"	"Acacia lineolata"
1480	"Phyllodes 15–25 × 2.5–4 mm"	"Acacia amyctica"
1481	"Peduncles glabrous; pods strongly undulate"	"Acacia undosa"
1481	"Peduncles hairy; pods not undulate"	"Acacia densiflora"
1482	"Branchlets spinose; phyllodes short and narrow (3–20 × 1–2 mm)"	1483
1482	"Branchlets not spinose; phyllodes commonly longer OR broader than above"	1484
1483	"Branchlets white by a conspicuous, flaking epidermis; peduncles 8–12 mm long; heads commonly 25–35-flowered (central Aust. in W.A., N.T. & S.A.)"	"Acacia basedowii"
1483	"Branchlets not as above; peduncles 5–10 mm long; heads 20–25-flowered (SW W.A.)"	"Acacia oxyclada"
1484	"Phyllodes reticulate between ±widely spaced major longitudinal nerves (anastomoses sometimes obscure, infrequent or obscured by indumentum, but present on all or most phyllodes)"	1485
1484	"Phyllodes not reticulate (nerves close together OR if spaced then no anastomosing minor nerves between them, or anastomoses occasional and present on only a few phyllodes)"	1590
1485	"Phyllodes 15–60 mm wide, l:w = 1–2.5, prominently reticulate, obtuse to retuse; inflorescences comprising 'false' terminal racemes due to phyllode suppression; peduncles 17–40 mm long, stout; pods 10–25 mm wide"	1486
1485	"Characters not combined as above"	1487
1486	"Phyllodes stellate-velutinous (rarely glabrous); sepal, petal and bracteole apices golden-hairy (W.A., N.T.)"	"Acacia auricoma"
1486	"Phyllodes crispate-villous or tomentose (rarely glabrous); sepal, petal and bracteole apices white-hairy (W.A., N.T., Qld)"	"Acacia retivenea"
1487	"Inflorescences some or all elongated, axillary or terminal racemes or panicles (raceme axes > 1 cm long)"	1488
1487	"Inflorescences simple OR if racemose, then raceme axes all < 1 cm long"	1514
1488	"Phyllodes with 1–3 prominent marginal glands on short or elongated triangular spurs; peduncles 3–6 mm long, with often sparse, white appressed hairs (glabrous in fruit); pods 4.5–10 mm wide; funicle 3/4-encircling seed (Qld)"	"Acacia wardellii"
1488	"Phyllodes without glands on spurs OR if so (rare) then peduncles glabrous or densely yellow-hairy, pods > 10 mm wide and funicle not encircling seed"	1489
1489	"Phyllodes with some or all main nerves clearly confluent with lower margin for some distance above pulvinus (northern Aust.)"	1490
1489	"Phyllodes with main nerves remaining free from margin (although sometimes running close to it)"	1497
1490	"Heads 4–7-flowered; phyllodes 4–9 cm long, 2–6 cm wide, l:w = 2–3, broadest at or above middle; seeds exarillate (W.A.)"	"Acacia anaticeps"
1490	"Heads 30–85-flowered; phyllode characters not combined as above"	1491
1491	"Phyllodes densely and minutely stellate-velutinous (W.A.)"	"Acacia sericata"
1491	"Phyllodes ±glabrous (sometimes stellate-hairy on young growth)"	1492
1492	"Pods openly coiled, 10–15 mm wide; funicle fleshy, red to orange, encircling seed; branchlets, young phyllodes and inflorescence axes scurfy (Qld)"	"Acacia oraria"
1492	"Pods straight; funicle not as above; branchlets, young phyllodes and inflorescence axes not scurfy BUT commonly pruinose"	1493
1493	"Pods 7–9 mm wide; funicle exarillate; phyllodes with the most prominent nerves of reticulum ±parallel to main longitudinal nerves; inflorescences terminally paniculate (Qld)"	"Acacia racospermoides"
1493	"Pods 20–40 mm wide; funicle arillate; phyllodes with the most prominent nerves of reticulum transverse or oblique to main longitudinal nerves"	1494
1494	"Phyllodes very large, 12–42 cm long, 6–17 cm wide; pruinose plants (W.A., N.T.)"	"Acacia dunnii"
1494	"Phyllodes shorter and/or narrower than above"	1495
1495	"Pods c. 2 cm wide, with thin valves; bright golden stellate hairs (few) at apex of developing racemes and on very young phyllodes (Qld)"	"Acacia leptoloba"
1495	"Pods 2.5–3.6 cm wide, with valves thick (coriaceous to woody); golden stellate hairs absent"	1496
1496	"Branchlets normally pruinose and glabrous; phyllodes abruptly narrowed to an obtuse apex (W.A., N.T., Qld)"	"Acacia platycarpa"
1496	"Branchlets not pruinose, normally hairy; phyllodes gradually narrowed towards apex (N.T.)"	"Acacia convallium"
1497	"Phyllodes with a gland on upper surface of lamina 5–12 mm above the pulvinus; racemes enclosed by imbricate bracts when young, normally growing out at anthesis (SW W.A.)"	"Acacia blakelyi"
1497	"Phyllodes with gland on upper margin of phyllodes; racemes not enclosed by imbricate bracts (not SW W.A.)"	1498
1498	"Phyllodes 3–8 mm wide, linear to narrowly elliptic; peduncles 1–3 mm long; heads 4–8 (–10)-flowered (N.S.W., Qld)"	"Acacia dawsonii"
1498	"Characters not combined as above"	1499
1499	"Penultimate branchlets obviously flattened; heads mostly in axillary fascicles, a few in racemes to 3 cm long (Qld, N.S.W.)"	"Acacia complanata"
1499	"Penultimate branchlets terete to angled"	1500
1500	"Sepals free; funicles exarillate"	1501
1500	"Sepals united for at least 1/4 their length; funicles arillate"	1504
1501	"Flowers 4-merous; heads 10–20-flowered; rainforest tree to 40 m high (SE Qld, N.S.W.)"	"Acacia bakeri"
1501	"Flowers 5-merous; heads more than 20-flowered; not rainforest tree"	1502
1502	"Peduncles 15–35 mm long; shrub 0.4–1 (–2) m high (N.T.)"	"Acacia amanda"
1502	"Peduncles 4–12 mm long; shrub or tree 4–12 m high"	1503
1503	"Phyllodes with minor nerves forming an open reticulum with ±irregular nerve-islands > 1 mm long (Qld)"	"Acacia racospermoides"
1503	"Phyllodes with minor nerves forming a very close, net-like reticulum, with nerve-islands less than 1 mm long (W.A., N.T., Qld)"	"Acacia hemignosta"
1504	"Phyllodes with gland 10–25 mm above pulvinus, and margin commonly indented at gland; heads 15–25-flowered (Qld, N.S.W.)"	"Acacia binervata"
1504	"Phyllodes with gland 0–5 mm above pulvinus (gland sometimes obscure; commonly 1–3 additional glands along upper margin); heads 30–75-flowered"	1505
1505	"Peduncles densely yellowish-hairy; young growth with conspicuous, golden stellate hairs; phyllodes normally acuminate (Qld)"	"Acacia flavescens"
1505	"Peduncles glabrous or white-hairy; young growth not golden stellate-hairy (except A. leptoloba which has obtuse phyllodes)"	1506
1506	"Phyllodes with 1–3 glands (additional to the basal gland) along upper margin (glands often small and not raised, observe phyllode edge carefully at ×10 mag.); pods 20–40 mm wide (northern Aust.)"	1507
1506	"Phyllodes without additional marginal glands; pods 5–15 mm wide"	1510
1507	"Phyllodes 7–12 cm long, with minor nerves forming a close reticulum of ±square nerve islands; golden stellate hairs on very young phyllodes and apex of developing raceme axes (sometimes very sparse) (Qld)"	"Acacia leptoloba"
1507	"Phyllodes normally > 12 cm long, with rather open reticulum and/or with elongated nerve islands; golden stellate hairs absent"	1508
1508	"Phyllodes 48–88 mm wide; heads c. 80-flowered; shrubs to 1.5 m high (N.T.)"	"Acacia tolmerensis"
1508	"Phyllodes 10–35 mm wide; heads 40–60-flowered; trees 3–12 m high"	1509
1509	"Pods 2–2.5 cm wide; phyllodes normally 8–20 cm long (N.T.)"	"Acacia mimula"
1509	"Pods 3–4 cm wide; phyllodes normally 15–25 cm long (Qld)"	"Acacia rothii"
1510	"Peduncles densely and obviously pubescent; pods straight, 5–8 mm wide; funicle/aril white and not encircling seed (Vic.)"	"Acacia frigescens"
1510	"Peduncles glabrous OR if hairy (sometimes in A. melanoxylon) then pods coiled and often twisted and seeds encircled by conspicuous pink to red funicles"	1511
1511	"Funicle/aril white, not encircling seed; phyllodes with secondary nerves clearly parallel to the main nerves and having relatively few, oblique anastomoses between them (Qld, N.S.W., A.C.T., Vic., Tas.)"	"Acacia implexa"
1511	"Funicle red to pink or orange, encircling seed"	1512
1512	"Phyllodes with inconspicuous secondary nerves; racemes 2-headed (southern W.A. & S.A.)"	"Acacia cyclops"
1512	"Phyllodes with secondary nerves forming conspicuous, close, net-like reticulum; racemes 3–5-headed"	1513
1513	"Pods 10–15 mm wide; branchlets, young phyllodes and inflorescence axes scurfy (Qld)"	"Acacia oraria"
1513	"Pods 3.5–8 mm wide; branchlets, young phyllodes and inflorescence axes not scurfy (Qld, N.S.W., ACT, Vic., Tas., S.A.)"	"Acacia melanoxylon"
1514	"Peduncles 10–24 mm long, axillary; phyllodes 20–55 mm long, glabrous, with few anastomoses; stipules persistent; low, viscid shrub without 'Minni Ritchi' bark (northern W.A., N.T. & Qld)"	"Acacia phlebocarpa"
1514	"Characters not combined as above"	1515
1515	"Phyllodes all < 5 cm long"	1516
1515	"Phyllodes some or all > 5 cm long"	1551
1516	"Branchlets AND flowering peduncles glabrous"	1517
1516	"Branchlets OR flowering peduncles hairy (indumentum sometimes sparse and/or embedded in resin)"	1528
1517	"Flowers 4-merous"	1518
1517	"Flowers 5-merous"	1519
1518	"Phyllodes linear- to oblong-elliptic, l:w > 2, with minor nerves forming an open, sparse, longitudinal reticulum (SW W.A.)"	"Acacia spongolitica"
1518	"Phyllodes obovate to suborbicular, l:w = 1–2, with minor nerves forming a prominent, close, net-like reticulum (N.S.W., A.C.T., Vic.)"	"Acacia alpina"
1519	"Sepals united"	1520
1519	"Sepals free; shrubs or trees usually not resinous or viscid; peduncles 5–15 mm long"	1524
1520	"Shrubs not resinous or viscid; funicle red or orange and encircling seed (southern W.A. & S.A.)"	"Acacia cyclops"
1520	"Shrubs resinous and often viscid; funicle not as above"	1521
1521	"Peduncles 5–7 mm long; phyllodes inequilaterally narrowly elliptic and ±recurved, acute, sparingly reticulate (SW W.A.)"	"Acacia recurvata"
1521	"Peduncles 10–30 mm long; phyllodes not as above"	1522
1522	"Phyllodes cuspidate, undulate, sparingly reticulate; pods villous (SW W.A.)"	"Acacia awestoniana"
1522	"Phyllodes neither cuspidate nor undulate, prominently reticulate; pods glabrous (arid zone: W.A., N.T., S.A., Qld)"	1523
1523	"Heads large (9–13 mm diam. when dry) and 40–60-flowered; phyllodes (4–) 5–7 (–8.5) cm long, (6–) 10–20 mm wide, thickly coriaceous and coarsely reticulately nerved, smooth or asperulate by small tubercles on nerves"	"Acacia dictyophleba"
1523	"Heads smaller than above (5–6 (–8) mm diam. when dry), 30–40-flowered; phyllodes 1.5–4 (–5) cm long, (3–) 4–11 mm wide, coriaceous to thinly coriaceous, normally sparsely tuberculate"	"Acacia melleodora"
1524	"Heads 10–13-flowered; pods ±woody; phyllodes 2–3 cm long (N.T.)"	"Acacia yirrkallensis"
1524	"Heads 25–42-flowered; pods chartaceous to coriaceous, often not breaking readily at constrictions between seeds; phyllodes 3–11 cm long"	1525
1525	"Bracteoles acute to short-acuminate; peduncles 1 or 2 in each node; pods 4–5 mm wide (W.A., N.T., Qld)"	"Acacia multisiliqua"
1525	"Bracteoles obtuse; peduncles normally some or all more than 2 in each node; pods 5–9 (–12) mm wide"	1526
1526	"Phyllodes mostly 8–16 mm wide, c. 6-nerved on each face (Qld, N.S.W.)"	"Acacia excelsa"
1526	"Phyllodes < 8 mm wide, 3-nerved on each face"	1527
1527	"Phyllodes 4–11 cm long, l:w = 16–40, often slightly kinked upwards at the gland (W.A., N.T., S.A.)"	"Acacia estrophiolata"
1527	"Phyllodes mostly 4–5 cm long l:w = 9–15, not kinked at the gland (Qld, N.S.W.)"	"Acacia excelsa"
1528	"Phyllodes very densely appressed-lanate with indumentum completely obscuring surface (SW W.A.)"	"Acacia lanuginophylla"
1528	"Phyllodes glabrous or if hairy then the phyllode surface clearly visible between the spreading or appressed hairs"	1529
1529	"Heads 1 or more, on often very short yet discernible racemes (axes sometimes only c. 1 mm long)"	1530
1529	"Inflorescences not racemose (peduncles arising directly from within axil of phyllode)"	1545
1530	"Phyllodes with margins prominently undulate, 6–15 mm long, 4–9 mm wide (SW W.A.)"	"Acacia dictyoneura"
1530	"Phyllodes with margins not or scarcely undulate"	1531
1531	"Phyllodes 9–11 mm long, 2–3 mm wide, hairy on nerves; racemes 1-headed; peduncles densely white-hairy (SW W.A.)"	"Acacia kingiana"
1531	"Phyllodes not as above"	1532
1532	"Phyllodes obviously hairy on their surface"	1533
1532	"Phyllodes glabrous or sparsely hairy (with indumentum confined mainly to margins or base)"	1535
1533	"Phyllodes 15–22 mm long, often with a net-like reticulum; peduncle hairs pale yellow to bright golden (SW W.A.)"	"Acacia flavipila"
1533	"Phyllodes 20–45 mm long, with nerves all ±parallel to long axis and minor nerves forming a rather sparse, elongated reticulum; peduncle hairs white or as above"	1534
1534	"Pods prominently undulate; branchlets and phyllodes with simple hairs (SW W.A.)"	"Acacia consobrina"
1534	"Pods not undulate; branchlets and often phyllodes with both stellate and simple hairs (Qld, N.S.W.)"	"Acacia ixiophylla"
1535	"Phyllodes with l:w 1–2 AND/OR not more than 10 mm long (SW W.A.)"	1536
1535	"Phyllodes with l:w > 2, > 10 mm long"	1537
1536	"Phyllodes 3–8 mm wide, with reticulum evident; peduncles 4–6 mm long, golden"	"Acacia flavipila"
1536	"Phyllodes 2–4 mm wide, with reticulum absent or scarcely evident; peduncles 2–3 mm long (to 5 mm in fruit)"	"Acacia loxophylla"
1537	"Phyllode l:w > 10 (SW W.A.)"	"Acacia lanei"
1537	"Phyllode l:w < 10"	1538
1538	"Phyllode gland (small & sometimes obscured by resin or indumentum, observe phyllode edge-on at ×10 mag.) ±at distal end of pulvinus"	1539
1538	"Phyllode gland (small & sometimes obscured by resin or indumentum, observe phyllode edge-on at ×10 mag.) clearly removed from pulvinus (i.e. 1–6 mm above it)"	1543
1539	"Peduncles 8–13 mm long; phyllode l:w = c. 1.5–3; young branchlets golden appressed-hairy (SW W.A.)"	"Acacia trulliformis"
1539	"Peduncles 2–7 mm long; phyllode l:w normally > 3; young branchlets not golden-hairy"	1540
1540	"Peduncles densely minutely pilose to tomentulose with spreading, white hairs; branchlets with both stellate and simple hairs (Qld, N.S.W.)"	"Acacia ixiophylla"
1540	"Peduncles and branchlets not as above (SW W.A.)"	1541
1541	"Racemes 1–2-headed; phyllodes mostly shallowly recurved; branchlets resinous but not resin-ribbed (SW W.A.)"	"Acacia recurvata"
1541	"Racemes 2–5-headed; phyllodes straight to shallowly incurved; branchlets normally resin-ribbed (at least at extremities)"	1542
1542	"Pods ±straight; phyllodes 3–7-nerved on each face with 1–3 extending to apical point (S.A., N.S.W., Vic.)"	"Acacia trineura"
1542	"Pods clearly curved; phyllodes usually more than 7-nerved on each face with many extending to apical point (SW W.A.)"	"Acacia redolens"
1543	"Peduncles 1–2 mm long; petals golden-hairy (SW W.A.)"	"Acacia auratiflora"
1543	"Peduncles 3–10 mm long; petals glabrous or white-hairy"	1544
1544	"Phyllodes 15–30 × 3–6 mm, with nerves forming a net-like reticulum (none or few longitudinal) (SW W.A.)"	"Acacia verricula"
1544	"Phyllodes 30 mm or more long, 4–15 mm wide, with nerves clearly longitudinal (Qld, N.S.W.)"	"Acacia venulosa"
1545	"Bark 'Minni Ritchi'; peduncles 9–25 mm long (arid zone & northern Aust. in W.A., N.T. & Qld)"	1546
1545	"Bark not 'Minni Ritchi'; peduncles 2–10 mm long (SW & eastern Aust.)"	1547
1546	"Phyllodes linear-oblanceolate, 1.5–7 mm wide, glabrous or sparsely appressed-hairy"	"Acacia lysiphloia"
1546	"Phyllodes oblong-elliptic to obovate, 5–15 mm wide, indumentum of fine, spreading hairs"	"Acacia monticola"
1547	"Peduncles glabrous; phyllodes acute, coarsely pungent (Vic.)"	"Acacia lanigera"
1547	"Peduncles hairy; phyllodes obtuse or acute, innocuous"	1548
1548	"Heads 12–20-flowered; phyllodes puncticulate, very obscurely reticulate (Vic.)"	"Acacia howittii"
1548	"Heads 27–47-flowered; phyllodes not puncticulate"	1549
1549	"Phyllodes scarcely reticulate, glabrous or subglabrous; pods prominently undulate (SW W.A.)"	"Acacia vittata"
1549	"Phyllodes obviously longitudinally reticulate"	1550
1550	"Phyllodes obviously hairy over entire surface; pods prominently undulate (SW W.A.)"	"Acacia consobrina"
1550	"Phyllodes glabrous or sometimes minutely hairy on margins; pods not undulate (Qld, N.S.W.)"	"Acacia venulosa"
1551	"Flowers 4-merous (SW W.A.)"	1552
1551	"Flowers 5-merous"	1555
1552	"Phyllodes 10–50 mm wide, prominently and openly reticulate between the 2–4 prominent longitudinal nerves"	"Acacia urophylla"
1552	"Phyllodes not as above"	1553
1553	"Peduncles hairy (sparse to dense); phyllodes 6–15 mm wide, with a very close, fine longitudinal reticulum; pods 7–8 mm wide; arils large and orange"	"Acacia galeata"
1553	"Peduncles glabrous; phyllodes 3–8 mm wide, with a relatively sparse, open reticulum; pods 2.5–5.5 mm wide; arils white"	1554
1554	"Phyllodes 6–20 cm long; heads large (7–12 mm diam), white to cream; pods c. 5 mm wide"	"Acacia veronica"
1554	"Phyllodes 2–8 cm long; heads smaller (4–6 mm wide), lemon yellow; pods 2.5–3.5 mm long"	"Acacia spongolitica"
1555	"Branchlets AND/OR peduncles hairy (the hairs spreading or appressed, dense to sparse)"	1556
1555	"Branchlets AND peduncles glabrous"	1566
1556	"Heads 4–15-flowered"	1557
1556	"Heads 20–60-flowered; peduncles 2–16 mm long"	1558
1557	"Heads on peduncles 1–3 mm long (N.S.W., Qld)"	"Acacia dawsonii"
1557	"Heads sessile (all mainland States in arid zone)"	"Acacia oswaldii"
1558	"Phyllodes prominently reticulate with numerous, small nerve-islands"	1559
1558	"Phyllodes sparingly and/or openly reticulate with very long nerve-islands"	1560
1559	"Pods straight; funicle/aril white, not encircling seed; peduncles densely pubescent (Vic.)"	"Acacia frigescens"
1559	"Pods coiled and often twisted; funicle/aril red to pink or orange, encircling seed; peduncles glabrous, infrequently pubescent (S.A., Qld, N.S.W., ACT, Vic., Tas.)"	"Acacia melanoxylon"
1560	"Peduncles with indumentum of ±spreading, normally dense hairs (Qld, N.S.W.)"	1561
1560	"Peduncles glabrous or hairs ±appressed"	1562
1561	"Phyllodes 8–15 cm long, l:w = 10–15; heads creamy white"	"Acacia baeuerlenii"
1561	"Phyllodes 3–9 cm long, l:w = 6–9; heads golden yellow"	"Acacia venulosa"
1562	"Inflorescences simple"	1563
1562	"Inflorescences racemose; peduncles 2–5.5 mm long; phyllode gland at distal end of pulvinus"	1565
1563	"Pods prominently undulate; peduncles 4–5.5 mm long; phyllodes to 5.5 cm long (SW W.A.)"	"Acacia vittata"
1563	"Pods not undulate; peduncles 5–12 mm long; phyllodes commonly > 5.5 cm long"	1564
1564	"Phyllodes resinous-punctate, with gland at distal end of pulvinus (N.S.W., Vic.)"	"Acacia subporosa"
1564	"Phyllodes not resinous-punctate, with gland 1.5–10 mm above pulvinus (SW W.A.)"	"Acacia heteroclita"
1565	"Pods ±straight; phyllodes 3–7-nerved on each face with 1–3 extending to apical point (S.A., N.S.W., Vic.)"	"Acacia trineura"
1565	"Pods clearly curved; phyllodes usually more than 7-nerved on each face with many extending to apical point (SW W.A.)"	"Acacia redolens"
1566	"Funicle/aril fleshy, red to pink or orange, 3/4 to wholly encircling seed; inflorescences clearly racemose"	1567
1566	"Funicle/aril not as above; phyllodes commonly with faint or open reticulum between main nerves; inflorescences commonly simple or fasciculate"	1569
1567	"Phyllodes not prominently reticulate; racemes 2-headed (southern W.A. & S.A.)"	"Acacia cyclops"
1567	"Phyllodes prominently closely reticulate between main longitudinal nerves; racemes 2–5-headed"	1568
1568	"Pods 10–15 mm wide; branchlets, young phyllodes and inflorescence axes scurfy (Qld)"	"Acacia oraria"
1568	"Pods 4–8 mm wide; branchlets, young phyllodes and inflorescence axes not scurfy (S.A., Qld, N.S.W., A.C.T., Vic., Tas.)"	"Acacia melanoxylon"
1569	"Branchlets obviously flattened, at least towards extremities; funicle/aril 1/2 or more encircling seed"	1570
1569	"Penultimate branchlets terete to angled; funicle/aril not encircling seed"	1571
1570	"Phyllodes 3-nerved on each face (Qld)"	"Acacia homaloclada"
1570	"Phyllodes 7–9-nerved on each face (Qld, N.S.W.)"	"Acacia complanata"
1571	"Phyllodes linear to linear-oblanceolate, 7–10 cm long, 4–6 mm wide, sparingly reticulate; peduncles 3–5 mm long; pods moniliform, 7–9 mm wide (SW W.A.)"	"Acacia obtecta"
1571	"Characters not combined as above"	1572
1572	"Phyllodes not more than 9 cm long"	1573
1572	"Phyllodes some or all > 9 cm long"	1581
1573	"Phyllodes 5–10-nerved on each face"	1574
1573	"Phyllodes 3- or 4-nerved on each face"	1575
1574	"Phyllodes mostly 4–6.5 cm long; areole of seeds small (Qld, N.S.W.)"	"Acacia excelsa"
1574	"Phyllodes 7.5 cm or more long; areole of seeds large (Qld)"	"Acacia armillata"
1575	"Shrubs resinous; phyllodes prominently reticulate; peduncles 10–30 mm long; pods 10–15 mm wide (arid zone: W.A., N.T., S.A., Qld)"	1576
1575	"Shrubs or trees not resinous; other characters not combined as above"	1577
1576	"Heads large (9–13 mm diam. when dry) and 40–60-flowered; phyllodes (4–) 5–7 (–8.5) cm long, (6–) 10–20 mm wide, thickly coriaceous and coarsely reticulately nerved"	"Acacia dictyophleba"
1576	"Heads smaller than above (5–6 (–8) mm diam. when dry), 30–40-flowered; phyllodes 1.5–4 (–5) cm long, (3–) 4–11 mm wide, generally thinner and less coarsely nerved than above"	"Acacia melleodora"
1577	"Pods breaking readily at constrictions between seeds; sepals free; phyllodes with a single marginal gland 2–15 mm above pulvinus"	1578
1577	"Pods not as above; sepals united or free; phyllodes normally with more than 1 gland along upper margin"	1579
1578	"Phyllodes l:w = 16–40, often slightly kinked upwards at the gland (W.A., N.T., S.A.)"	"Acacia estrophiolata"
1578	"Phyllodes l:w = 9–15, not kinked at the gland (Qld, N.S.W.)"	"Acacia excelsa"
1579	"Funicle exarillate; peduncles 3–5 mm long (to 9 mm in fruit); phyllodes 8 cm long or more; gland 0–2 mm above pulvinus (Qld)"	"Acacia ramiflora"
1579	"Funicle with a small, clavate aril"	1580
1580	"Phyllodes 5–11 (–14) cm long with the lowermost gland 0–2 mm above pulvinus; peduncles 5–12 mm long (N.T., Qld)"	"Acacia simsii"
1580	"Phyllodes 3.5–6.5 cm long with lowermost gland 1.5–10 mm above pulvinus; peduncles 3–7 mm long (W.A., N.T., Qld)"	"Acacia multisiliqua"
1581	"Sepals united; peduncles 7–21 mm long; heads cream to very pale yellow; funicle arillate (N.S.W.)"	"Acacia tessellata"
1581	"Sepals free or if united then other characters not combined as above (not N.S.W.)"	1582
1582	"Peduncles some or all 15–25 mm long; phyllodes strongly falcately recurved, 12–18 cm long (Qld)"	1583
1582	"Peduncles all < 15 mm long; phyllodes straight to shallowly falcately recurved or obviously incurved"	1584
1583	"Phyllodes with 3 or 4 main longitudinal nerves on each face, 5–10 mm wide; pods 2–4 mm wide"	"Acacia johannis"
1583	"Phyllodes with 6–8 main longitudinal nerves on each face, 8–19 mm wide; pods 9–11 mm wide"	"Acacia legnota"
1584	"Phyllodes 2–7 mm wide"	1585
1584	"Phyllodes some or all > 7 mm wide (Qld)"	1587
1585	"Pods breaking readily at constrictions between seeds; sepals free; phyllodes often slightly kinked upwards at the gland; trees (W.A., N.T., S.A.)"	"Acacia estrophiolata"
1585	"Pods not as above; sepals united or free; phyllodes not kinked at the gland; shrubs"	1586
1586	"Peduncles 3–5 mm long (to 9 mm in fruit); funicle exarillate (Qld)"	"Acacia ramiflora"
1586	"Peduncles 5–12 mm long; funicle with a small, clavate aril (N.T., Qld)"	"Acacia simsii"
1587	"Phyllodes with gland 3–15 mm above pulvinus; pods 12 mm wide, not or scarcely constricted between seeds"	"Acacia hylonoma"
1587	"Phyllodes with gland 0–2 mm above pulvinus; pods 6–11 mm wide"	1588
1588	"Pods strongly constricted between seeds; phyllodes 5–10-nerved on each face"	"Acacia armillata"
1588	"Pods not constricted between seeds; phyllodes 3–6-nerved on each face"	1589
1589	"Phyllodes 7–14 mm wide; funicle scarcely arillate, not encircling seed"	"Acacia ommatosperma"
1589	"Phyllodes 13–45 mm wide; funicle/aril encircling seed"	"Acacia fleckeri"
1590	"Inflorescences all or mostly racemose, with raceme axes long to very short (sometimes only c. 1 mm, the peduncles then sometimes appearing as axillary clusters)"	1591
1590	"Inflorescences all or mostly simple (i.e. peduncles arising from phyllode axils"	1633
1591	"Flowers 4-merous; phyllodes 3–8 mm wide, 2 or 3-nerved, glabrous; racemes 2-headed with axes 2–6 mm long; peduncles glabrous (SW W.A.)"	"Acacia veronica"
1591	"Flowers 5-merous OR if 4-merous then other characters not combined as above and native to Qld or N.S.W."	1592
1592	"Phyllodes with 3 or 4 normally widely spaced nerves on each face"	1593
1592	"Phyllodes with more than 4, normally very close and fine nerves on each face (nerves of uniform prominence or 1 to several more evident than rest, sometimes obscured by indumentum or surface bloom)"	1604
1593	"Phyllodes 3–8 × 2–5 mm, widely elliptic to oblong-elliptic (SW W.A.)"	"Acacia loxophylla"
1593	"Phyllodes not as above"	1594
1594	"Phyllodes narrowly linear, normally 1–3 mm wide"	1595
1594	"Phyllode not narrowly linear, commonly > 3 mm wide"	1600
1595	"Phyllodes 1–5 cm long; plants normally resinous"	1596
1595	"Phyllodes > 5 cm long; plants not resinous (not SW W.A.)"	1597
1596	"Heads golden; pods 2–3 mm wide, strongly curved to openly 11/2-coiled (S.A., N.S.W., Vic.)"	"Acacia wilhelmiana"
1596	"Heads cream; pods 4.5–6 mm wide, ±straight (SW W.A.)"	"Acacia cowaniana"
1597	"Sepals 1/2–2/3-united (N.S.W.)"	"Acacia elongata"
1597	"Sepals free to base"	1598
1598	"Phyllodes 5–11.5 cm long, with curved-acuminate apices; heads subglobular to obloid; pods 2–3 mm wide; seeds arillate (SW W.A.)"	"Acacia websteri"
1598	"Phyllodes 12–24 cm long; heads globular; pods 6–14 mm wide; seeds ±exarillate (N.T.)"	1599
1599	"Racemes 3–15 cm long; branchlets glabrous; phyllodes with small gland at apex"	"Acacia praelongata"
1599	"Racemes 0.5–2 mm long; branchlets appressed-hairy; phyllode apices acuminate-curved and eglandular"	"Acacia dolichophylla"
1600	"Peduncles glabrous"	1601
1600	"Peduncles appressed-hairy"	1603
1601	"Racemes 2–6 cm long, 3–6-headed, enclosed when young by conspicuous bracts; phyllodes with a gland on upper surface 5–12 mm above pulvinus (SW W.A.)"	"Acacia blakelyi"
1601	"Racemes not as above; phyllodes vertically flattened with gland absent or on upper margin near pulvinus"	1602
1602	"Heads 25–35-flowered; racemes 1- or 2-headed on axes 0.5–2 mm long; funicle not red or orange or encircling seed (N.T., Qld)"	"Acacia simsii"
1602	"Heads 60–75-flowered; racemes 2-headed on axes 3–20 mm long; funicle red or orange and encircling seed (W.A., S.A.)"	"Acacia cyclops"
1603	"Pods ±straight (S.A., N.S.W., Vic.)"	"Acacia trineura"
1603	"Pods clearly curved (SW W.A.)"	"Acacia redolens"
1604	"Phyllodes of mature plants covered with a conspicuous, grey-white, often flaking, mealy bloom, broadest in middle and tapered equally at both ends, penultimate phyllodes glabrous or sparsely hairy; pods chartaceous; malodorous trees"	1605
1604	"Phyllodes lacking a conspicuous bloom, often silvery appressed-puberulous and linear"	1606
1605	"Pods 12–25 mm wide, curved to openly once-coiled; petals sparsely to densely puberulous (N.T., S.A., Qld)"	"Acacia georginae"
1605	"Pods 8–12 mm wide, ±straight; petals ±glabrous (N.T., S.A., Qld, N.S.W.)"	"Acacia cambagei"
1606	"Phyllodes falcate, mostly 10–20 cm long and 7–20 mm wide, sericeous; peduncles 10–20 (–30) mm long; racemes 2–10 mm long; pods subterete (Qld, N.S.W.)"	"Acacia harpophylla"
1606	"Characters not combined as above"	1607
1607	"Flowers mostly 4-merous; racemes 20–60 mm long; heads 12–20-flowered; peduncles 5–10 mm long (Qld)"	"Acacia argyrodendron"
1607	"Flowers 5-merous; other characters not combined as above"	1608
1608	"Heads 4–8 (–10)-flowered on peduncles 1–3 mm long (Qld, N.S.W., A.C.T., Vic.)"	"Acacia dawsonii"
1608	"Characters not combined as above"	1609
1609	"Sepals ±free"	1610
1609	"Sepals united for 1/4 or more their length"	1621
1610	"Phyllodes glabrous, mostly 4–8 cm × 3–7 mm, with nerves fine and ±close together, acute to acuminate with recurved to uncinate tips; racemes mostly 2-headed and terminated by a resinous, vegetative bud (SW W.A.)"	"Acacia warramaba"
1610	"Characters not combined as above"	1611
1611	"Phyllodes glabrous (ignore base) AND with narrow but distinct spaces between nerves (not arid zone)"	1612
1611	"Phyllodes often appressed-hairy at least when young, the nerves fine and close together (predominantly arid zone)"	1614
1612	"Phyllodes with l:w > 10 (SW W.A.)"	"Acacia lanei"
1612	"Phyllodes with l:w < 10"	1613
1613	"Pods ±straight; phyllodes 3–7-nerved on each face with 1–3 extending to apical point (S.A., N.S.W., Vic.)"	"Acacia trineura"
1613	"Pods clearly curved; phyllodes usually more than 7-nerved on each face with many extending to apical point (SW W.A.)"	"Acacia redolens"
1614	"Phyllodes 1–3 mm wide, l:w > 30, obviously appressed-puberulous at least when young, acuminate with fine, delicately curved points; peduncles silvery or white appressed-hairy; pods chartaceous, flat"	1615
1614	"Phyllodes some or all > 3 mm wide OR if not then other characters not combined as above"	1616
1615	"Pods submoniliform, not reticulate, 2–5 mm wide (S.A., N.S.W., Vic.)"	"Acacia loderi"
1615	"Pods flat, reticulate, 4–10 mm wide (W.A., S.A.)"	"Acacia papyrocarpa"
1616	"Phyllodes rigid and erect, 2–4 mm wide, obviously appressed-puberulous, acuminate with straight, sharply to coarsely pungent points; pods densely appressed-puberulous (Qld, N.S.W.)"	"Acacia cana"
1616	"Characters not combined as above"	1617
1617	"Phyllodes 5–10 cm long, 2–4 mm wide, glabrous to ±obscurely appressed-hairy; heads 13–18-flowered; pods flat, glabrous (N.T.)"	"Acacia latzii"
1617	"Characters not combined as above"	1618
1618	"Branches pendulous; pods (including distinct wings) 8–18 mm wide, flat; heads 12–25-flowered (Qld, N.S.W., Vic.)"	"Acacia pendula"
1618	"Branches not pendulous; pods (where known) 4–8 mm wide; heads 25–60-flowered"	1619
1619	"Peduncles glabrous or sparsely appressed-puberulous; branchlets scurfy, glabrous; pods linear; seeds ?transverse (Qld)"	"Acacia maranoensis"
1619	"Peduncles obviously white or yellow appressed-puberulous; branchlets apically appressed-puberulous; pods constricted between seeds; seeds longitudinal"	1620
1620	"Pods ±woody; heads 30–60-flowered; phyllodes 5–14 cm long (W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia calcicola"
1620	"Pods not woody; heads 25–40-flowered; phyllodes 10–20 cm long (Qld)"	"Acacia ammophila"
1621	"Phyllodes 2–5 cm long (SW W.A.)"	1622
1621	"Phyllodes some or all > 5 cm long (not SW W.A.)"	1623
1622	"Phyllodes < 3 mm wide"	"Acacia cowaniana"
1622	"Phyllodes 3–7 mm wide"	"Acacia recurvata"
1623	"Phyllodes 5–13 cm long, 2–4 mm wide, straight, rigid, erect, obviously appressed-puberulous, acuminate with straight, ±pungent points; pods linear, densely appressed-puberulous (Qld, N.S.W.)"	"Acacia cana"
1623	"Characters not combined as above"	1624
1624	"Seed arils large and bright orange; pods moniliform, 7–12 mm wide, striate; phyllodes 12–33 cm long (W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia coriacea"
1624	"Characters not combined as above"	1625
1625	"Phyllodes narrowly elliptic to oblong-elliptic, l:w < 20; pods not moniliform (Qld, N.S.W. & Vic., not arid zone)"	1626
1625	"Phyllodes narrowly linear, l:w > 20; pods sometimes moniliform (commonly arid zone)"	1628
1626	"Phyllodes densely silvery appressed-puberulous at least when young; branches pendulous"	"Acacia pendula"
1626	"Phyllodes glabrous or sparsely appressed-puberulous; branches not pendulous"	1627
1627	"Pods 3–5 mm wide with longitudinal seeds; phyllodes 4–9 mm wide"	"Acacia homalophylla"
1627	"Pods 9–15 mm wide with transverse seeds; phyllodes 5–25 mm wide"	"Acacia melvillei"
1628	"Heads 10–20-flowered; phyllodes 1–2 mm wide; pods ±moniliform, 3–4 mm wide, glabrous to sparsely hairy (Qld)"	"Acacia microcybe"
1628	"Heads 20–60-flowered; phyllodes > 2 mm wide OR if not then pod characters not combined as above"	1629
1629	"Phyllodes 15–40 cm long, often glabrous, with nerves close but with narrow inter-nerve spaces; branches normally pendulous; pods moniliform, woody (arid zone, all mainland states)"	"Acacia stenophylla"
1629	"Characters not combined as above"	1630
1630	"Phyllodes grey-green, glabrous or with indumentum not obvious; pods glabrous or sparsely appressed-hairy (Qld)"	1631
1630	"Phyllodes silvery grey-white due to dense indumentum (at least when young); pods densely appressed-hairy"	1632
1631	"Phyllodes 1.5–4 mm wide; pods 2–3 mm wide, submoniliform"	"Acacia microsperma"
1631	"Phyllodes 4–8 (–12) mm wide; pods not as above"	"Acacia maranoensis"
1632	"Pods submoniliform, to 13 cm long; racemes 2–4-headed; (W.A., N.T.)"	"Acacia maconochieana"
1632	"Pods linear, ±flat and straight-edged, to 6.5 cm long; racemes 2–10-headed (N.T., Qld)"	"Acacia tephrina"
1633	"Flowers 4-merous"	1634
1633	"Flowers 5-merous"	1643
1634	"Phyllodes > 3 mm wide and many-nerved (W.A.)"	1635
1634	"Phyllodes not more than 3 mm wide, or, if wider, then 3-nerved on each face"	1637
1635	"Heads sessile, obloid; phyllode nerves prominent"	"Acacia neurophylla"
1635	"Heads pedunculate, globular; phyllode nerves not prominent"	1636
1636	"Phyllodes 2.5–5.5 cm long; heads 16–24-flowered; pods 2–3.5 mm wide"	"Acacia patagiata"
1636	"Phyllodes 6–12 cm long; heads 54–85-flowered; pods 5–7 mm wide"	"Acacia eremaea"
1637	"Heads sessile, mostly obloid (SW W.A.)"	1638
1637	"Heads pedunculate, globular"	1641
1638	"Phyllodes 3-nerved AND > 1.5 mm wide"	1639
1638	"Phyllodes 4- to many-nerved on each face OR not more than 1.5 mm wide"	1640
1639	"Phyllodes 2.5–4.5 cm long, straight, with nerves equally prominent; pods 3.5 mm wide"	"Acacia singula"
1639	"Phyllodes 4–13 cm long, strongly curved, midrib more prominent than secondary nerves; pods 2–3 mm wide"	"Acacia lirellata"
1640	"Phyllode nerves equal in width; young branchlets terete, not resinous"	"Acacia multispicata"
1640	"Phyllodes with central nerve clearly broader than the 2 or 3 finer flanking nerves; young branchlets resinous-angled"	"Acacia microneura"
1641	"Inflorescences 10–15-flowered, peduncles 5–6 mm long (SW W.A.)"	"Acacia inceana"
1641	"Inflorescences 20–35-flowered (not SW W.A.)"	1642
1642	"Peduncles 2–6 mm long (Qld, N.S.W.)"	"Acacia viscidula"
1642	"Peduncles 8–13 mm long (S.A.)"	"Acacia barattensis"
1643	"Phyllodes 3- or 4-nerved on each face (OR, in A. sulcata, on the lower surface)"	1644
1643	"Phyllodes more than 4-nerved on each face"	1687
1644	"Heads sessile; phyllodes 1–3 mm wide (SW W.A.)"	1645
1644	"Heads pedunculate (although peduncles sometimes only 1–2 mm long)"	1646
1645	"Bark 'Minni Ritchi'; phyllodes with 3 strongly raised nerves on each face; pods strongly undulate, villous"	"Acacia repanda"
1645	"Bark not 'Minni Ritchi'; phyllode nerves not as above; pods ±straight, minutely silvery-sericeous"	"Acacia epedunculata"
1646	"Phyllodes not more than 5 cm long"	1647
1646	"Phyllodes some or all > 5 cm long"	1670
1647	"Heads obloid"	1648
1647	"Heads globular"	1649
1648	"Bark 'Minni Ritchi'; phyllodes linear-oblanceolate, 1–5 cm long, 1.5–7 mm wide, with nerves not resinous (northern W.A., N.T., Qld)"	"Acacia lysiphloia"
1648	"Bark not 'Minni Ritchi'; phyllodes narrowly linear, 4 cm long or more and 1–2 mm wide, with nerves often brown-resinous (SW W.A.)"	"Acacia gibbosa"
1649	"Phyllodes horizontally flattened and often with a small gland on upper surface of lamina, commonly glaucous (at least when young), < 2 cm long (SW W.A.)"	1650
1649	"Phyllodes vertically flattened with gland (when present) on upper margin of phyllode"	1651
1650	"Phyllodes ±nerveless"	"Acacia leptospermoides"
1650	"Phyllodes prominently 3-nerved on lower surface"	"Acacia sulcata"
1651	"Sepals united for at least 1/4 their length"	1652
1651	"Sepals free or united at extreme base"	1659
1652	"Pods ±woody and normally tapered at base, opening elastically from apex, obliquely to longitudinally striate (nerves sometimes obscure); seeds oblique (northern Aust.)"	1653
1652	"Pods not woody; seeds longitudinal (southern Aust.)"	1655
1653	"Phyllodes 1–5 mm wide; heads 4–7 mm diam. (W.A., N.T., Qld)"	"Acacia nuperrima"
1653	"Phyllodes 3–20 mm wide; heads 7–16.5 mm diam. (NW W.A. & N.T.)"	1654
1654	"Heads 40–60-flowered, 7–12 mm diam."	"Acacia sp. Kununurra (G.Lullfitz 6195)"
1654	"Heads 7–25-flowered, 7.5–16.5 mm diam."	"Acacia stellaticeps"
1655	"Phyllodes resinous-punctate, 4–8 mm wide, with appressed-puberulous margins (Vic.)"	"Acacia howittii"
1655	"Phyllodes not resinous-punctate, 1–3 mm wide OR if wider then glabrous"	1656
1656	"Phyllodes rounded-obtuse, ±fleshy, 2–7 mm wide, with obscure nerves (SW W.A.)"	"Acacia pinguiculosa"
1656	"Phyllodes acute or distinctly (excentrically) mucronulate, 1–3 mm wide (Qld, N.S.W.)"	1657
1657	"Phyllodes innocuous, excentrically mucronulate, with indistinct nerves (N.S.W., Qld)"	"Acacia johnsonii"
1657	"Phyllodes acute and coarsely pungent, with distinct raised nerves (N.S.W.)"	1658
1658	"Branchlets glabrous; peduncles 7–12 mm long"	"Acacia trinervata"
1658	"Branchlets hairy; peduncles 2–6 mm long"	"Acacia bynoeana"
1659	"Branchlets glabrous"	1660
1659	"Branchlets hairy at least towards apices (SW W.A.)"	1665
1660	"Heads 10–13-flowered; pods ±woody; phyllodes 2–3 cm long, with nerves obscure except central one, and stomata evident (northern N.T.)"	"Acacia yirrkallensis"
1660	"Characters not combined as above"	1661
1661	"Peduncles with a small persistent bract at base (arid zone and northern Aust.)"	1662
1661	"Peduncles ebracteate at base"	1664
1662	"Bracteoles acute to short-acuminate; peduncles 1 or 2 in each node; pods 4–5 mm wide (W.A., N.T., Qld)"	"Acacia multisiliqua"
1662	"Bracteoles obtuse; peduncles normally some or all more than 2 in each node; pods 5–9 (–12) mm wide"	1663
1663	"Phyllodes with l:w = 16–40, often slightly kinked upwards at the gland (W.A., N.T., S.A.)"	"Acacia estrophiolata"
1663	"Phyllodes with l:w = 9–15, not kinked at the gland (Qld, N.S.W.)"	"Acacia excelsa"
1664	"Peduncles 2–5 mm long (SW W.A., S.A., N.S.W., Vic.)"	"Acacia sclerophylla"
1664	"Peduncles 10–20 mm long (SW W.A.)"	"Acacia ridleyana"
1665	"Peduncles > 5 mm long AND/OR heads more than 25-flowered; phyllodes 1–3.5 mm wide, covered with dense, spreading hairs"	1666
1665	"Peduncles 2–5 mm long AND heads 10–25-flowered"	1667
1666	"Phyllodes sharply to coarsely pungent, strongly 3-nerved on each face, ±sigmoidally curved or straight; young growth white-hairy"	"Acacia ridleyana"
1666	"Phyllodes not as above; young growth golden- or white-hairy"	"Acacia chrysopoda"
1667	"Phyllodes narrowly linear, 20–45 × 1–3 mm wide, not deflexed"	"Acacia sclerophylla"
1667	"Phyllodes not as above, sometimes deflexed"	1668
1668	"Phyllodes 4-nerved on each face; branchlets tomentulose"	"Acacia hadrophylla"
1668	"Phyllodes 3-nerved on each face"	1669
1669	"Branchlets with closely appressed hairs"	"Acacia gemina"
1669	"Branchlets with patent hairs"	"Acacia deflexa"
1670	"Heads obloid (SW W.A.)"	1671
1670	"Heads globular"	1673
1671	"Bark 'Minni Ritchi'; branchlets and phyllodes obviously appressed-puberulous"	"Acacia fauntleroyi"
1671	"Bark not 'Minni Ritchi'; branchlets and phyllodes glabrous or appressed-puberulous (especially when young)"	1672
1672	"Phyllode 2–3.5 mm wide, with nerves raised and not brown or resinous"	"Acacia websteri"
1672	"Phyllode 1–2 mm wide, with nerves not raised and often brown-resinous"	"Acacia gibbosa"
1673	"Phyllodes 9–15 (–20) mm wide; branchlets obviously flattened, at least towards their extremities; funicle/aril 1/2 or more encircling seed (Qld)"	"Acacia homaloclada"
1673	"Phyllodes < 9 mm wide OR if not then other characters not combined as above"	1674
1674	"Phyllodes 12–19 cm × 1–2 mm; peduncles 10–13 mm long; sepals free; branchlets appressed-puberulous, glabrescent (N.T.)"	"Acacia dolichophylla"
1674	"Characters not combined as above"	1675
1675	"Sepals 1/3–3/4-united; peduncles hairy (N.S.W.)"	1676
1675	"Sepals free OR if united (rare) then peduncles glabrous"	1677
1676	"Phyllodes 0.6–1 mm wide; peduncles with red resin-hairs and white hairs"	"Acacia ptychoclada"
1676	"Phyllodes 1.5–6 mm wide; peduncles without conspicuous reddish resin-hairs"	"Acacia elongata"
1677	"Pods moniliform, 7–9 mm wide; peduncles 3–5 mm long; phyllodes 7–10 cm × 4–6 mm (W.A.)"	"Acacia obtecta"
1677	"Pods not as above; other characters normally not combined as above"	1678
1678	"Peduncles (at anthesis) with a small, persistent bract at base (not SW W.A.)"	1679
1678	"Peduncles (at anthesis) ebracteate at base"	1684
1679	"Phyllodes resinous-punctate, glabrous except for hairs on margins; sepals united (N.S.W., Vic.)"	"Acacia cognata"
1679	"Phyllodes not resinous-punctate, glabrous"	1680
1680	"Pods breaking readily at constrictions between seeds; sepals free; phyllodes with a single marginal gland 2–15 mm above pulvinus"	1681
1680	"Pods not as above; sepals united or free; phyllodes normally with more than 1 gland along upper margin"	1682
1681	"Phyllodes with l:w = 16–40, often slightly kinked upwards at gland (W.A., N.T., S.A.)"	"Acacia estrophiolata"
1681	"Phyllodes with l:w = 9–15, not kinked at gland (Qld, N.S.W.)"	"Acacia excelsa"
1682	"Funicle exarillate; peduncles 3–5 mm long (to 9 mm in fruit); phyllodes 8–12 (–15) cm long; gland 0–2 mm above pulvinus (Qld)"	"Acacia ramiflora"
1682	"Funicle with a small, clavate aril"	1683
1683	"Phyllodes at least 5 cm long with lowermost gland 0–2 mm above pulvinus; peduncles 5–12 mm long (N.T., Qld)"	"Acacia simsii"
1683	"Phyllodes 3.5 cm or more long with lowermost gland 1.5–10 mm above pulvinus; peduncles 3–7 mm long (W.A., N.T., Qld)"	"Acacia multisiliqua"
1684	"Phyllodes abruptly narrowed to short, straight points; sepals free, linear (S.A.)"	"Acacia sclerophylla"
1684	"Phyllodes gradually narrowed into acute to acuminate, delicately curved to subuncinate points (SW W.A.)"	1685
1685	"Sepals 1/4–1/2-united, lobes narrowly oblong; young growth and tips of mature phyllodes glabrous; phyllodes with midnerve or all 3 main nerves resinous"	"Acacia trinalis"
1685	"Sepals free, spathulate with a long, linear stipe; young growth golden- or white-sericeous; tips of mature phyllodes commonly appressed-puberulous"	1686
1686	"Phyllodes 3–9 mm wide"	"Acacia heteroclita"
1686	"Phyllodes 1–2.5 mm wide"	"Acacia triptycha"
1687	"Pods woody, 7–12 mm wide, ±quadrangular by marginal wings; phyllodes 4–13 cm long, 2–7 mm wide, with margins commonly red- or brown-resinous (W.A.)"	"Acacia quadrimarginea"
1687	"Characters not combined as above"	1688
1688	"Sepals free or very shortly united at base"	1689
1688	"Sepals united for at least 1/4 their length"	1716
1689	"Phyllodes not more than 5 cm long"	1690
1689	"Phyllodes some or all > 5 cm long"	1703
1690	"Branchlets with prominent, crenulate resin-ribs; pods 6–15 mm wide (arid zone: W.A. & N.T. )"	"Acacia minyura"
1690	"Characters not combined as above"	1691
1691	"Phyllodes fleshy (coarsely longitudinally wrinkled when dry), 2–3 mm wide, scarcely flattened; branchlets and peduncles glabrous (S.A.)"	"Acacia pinguifolia"
1691	"Phyllodes not fleshy OR if so (A. farinosa) then 2–6 mm wide and distinctly flat, and peduncles densely hairy"	1692
1692	"Bark 'Minni Ritchi'; viscid shrubs; peduncles 10–25 mm long (northern W.A., N.T., Qld)"	"Acacia lysiphloia"
1692	"Bark not 'Minni Ritchi'; shrubs not viscid; peduncles usually not more than 10 mm long (southern Aust.)"	1693
1693	"Branchlets tomentose; phyllodes tomentose, 2–4.5 cm × 3–10 mm; peduncles 3–4 mm long and tomentose (SW W.A.)"	"Acacia caesariata"
1693	"Characters not combined as above"	1694
1694	"Phyllode glands (small, observe carefully at ×10 mag.) 1–3 along upper margin, the lowermost 2–21 mm above pulvinus"	1695
1694	"Phyllode glands (observe carefully at ×10 mag.) absent or single along upper margin and at distal end of pulvinus"	1698
1695	"Phyllodes ±fleshy and longitudinally wrinkled when dry, with indistinct nerves, 2–7 cm long, obtuse; peduncles very densely hairy (S.A., Vic.)"	"Acacia farinosa"
1695	"Phyllodes not fleshy or wrinkled, finely but distinctly nerved, commonly acute to short-acuminate; peduncles commonly glabrous (SW W.A.)"	1696
1696	"Peduncles 2–11 mm long; branchlets glabrous or appressed-puberulous (hairs straight); phyllodes 20–65 × 2–5 mm; pods not undulate"	"Acacia lineolata"
1696	"Peduncles 0.5–2 mm long; branchlets tomentulose with indumentum extending to pulvinus"	1697
1697	"Pods not undulate; phyllodes oblong-elliptic, 5–25 mm long, 2.5–5.5 mm wide"	"Acacia hadrophylla"
1697	"Pods undulate; phyllodes linear to linear-oblanceolate, 20–45 mm long, 1–4 mm wide"	"Acacia undosa"
1698	"Phyllodes with longitudinal nerves not close together (inter-nerve distance more than twice diameter of nerve)"	1699
1698	"Phyllodes with longitudinal nerves very close together"	1700
1699	"Phyllodes 2–4 cm long; heads 12–20-flowered; peduncles 2–5 mm long (W.A., S.A., N.S.W., Vic.)"	"Acacia sclerophylla"
1699	"Phyllodes 3.5–7.5 cm long; heads 30–45-flowered; peduncles 5–10 mm long (SW W.A.)"	"Acacia pelophila"
1700	"Phyllodes 2–8.5 cm long, linear to narrowly oblanceolate, with tips clearly acute to short-acuminate, slender and curved (SW W.A.)"	"Acacia enervia"
1700	"Phyllodes characters not combined as above"	1701
1701	"Pods narrowly oblong, 5–7 mm wide, with oblique seeds; peduncles 6–15 mm long; phyllodes 2.5–8 mm wide (S.A.)"	"Acacia whibleyana"
1701	"Pods linear, 2–3 mm wide, with longitudinal seeds; peduncles 1.5–7 mm long; phyllodes 1–5 mm wide"	1702
1702	"Phyllodes innocuous, with nerves obscure to ±evident, not paler than inter-nerve spaces (SW W.A., S.A., Vic.)"	"Acacia ancistrophylla"
1702	"Phyllodes coarsely pungent, with nerves strong, discrete and paler than inter-nerve spaces (SW W.A.)"	"Acacia amyctica"
1703	"Phyllode glands (small, observe carefully at ×10 mag.) 1–3 along upper margin, with the lowermost 2–21 mm above pulvinus"	1704
1703	"Phyllode glands absent or basal (not more than 2 mm above pulvinus)"	1705
1704	"Phyllodes ±fleshy and longitudinally wrinkled when dry, with indistinct nerves, obtuse; peduncles very densely hairy (S.A., Vic.)"	"Acacia farinosa"
1704	"Phyllodes not fleshy or wrinkled, finely but distinctly nerved, acute to short-acuminate; peduncles commonly glabrous (SW W.A.)"	"Acacia lineolata"
1705	"Phyllodes obviously hairy on surface (at least when young, some hairs normally extending to mature phyllodes), with acuminate and normally delicately curved apices; pods chartaceous, flat, 2–10 mm wide"	1706
1705	"Phyllodes glabrous or with minute hairs between nerves (very young new shoots sometimes densely hairy in A. enervia)"	1707
1706	"Pods submoniliform, not reticulate, 2–5 mm wide (S.A., N.S.W., Vic.)"	"Acacia loderi"
1706	"Pods flat, reticulate, 4–10 mm wide (W.A., S.A.)"	"Acacia papyrocarpa"
1707	"Phyllodes with longitudinal nerves not close together (inter-nerve distance more than twice diameter of nerve), 3–6 mm wide, glabrous; heads shortly obloid; peduncles ±glabrous (SW W.A.)"	"Acacia pelophila"
1707	"Phyllodes with longitudinal nerves very close together OR if slightly spaced then other characters not combined as above"	1708
1708	"Phyllodes 4–9 mm wide, falcately recurved, appressed-hairy between nerves; pods ±quadrangular, 5–6 mm wide, crustose to woody (W.A.)"	"Acacia subtessarogona"
1708	"Phyllodes and pods not as above"	1709
1709	"Plants resinous-aromatic (smelling of Friars Balsam); peduncles 9–10 mm long; pods ±moniliform (W.A.)"	"Acacia balsamea"
1709	"Characters not combined as above"	1710
1710	"Heads globular or slightly obloid, on discernible peduncles 2–9 mm long"	1711
1710	"Heads clearly obloid, sometimes sessile (SW W.A. and arid zone)"	1713
1711	"Phyllodes c. 1 mm wide, abruptly narrowed to short, straight points; peduncles glabrous, 3–4 mm long (S.A.)"	"Acacia sclerophylla"
1711	"Characters not combined as above (SW W.A.)"	1712
1712	"Branchlets resin-ribbed; phyllodes obtuse-mucronulate to subacute"	"Acacia lanei"
1712	"Branchlets not resin-ribbed; phyllodes short-acuminate with delicate, curved points"	"Acacia enervia"
1713	"Branchlets pendulous, glabrous; phyllode margins commonly red or brown; pods 8–17 mm wide, woody, flat with wide margins (W.A.)"	"Acacia demissa"
1713	"Branchlets not pendulous; phyllode margins not red or brown; pods not as above"	1714
1714	"Phyllodes to c. 3 mm wide, with prominent, raised midrib; pods linear, sparsely appressed-puberulous to glabrous (W.A.)"	"Acacia jamesiana"
1714	"Phyllodes with nerves of uniform prominence or if central one more evident than the rest then not raised; pods normally terete, appressed-hairy or striate"	1715
1715	"Pods 1.5–3 mm wide; phyllodes 1–10 mm wide (arid & semi-arid areas of W.A.)"	"Acacia coolgardiensis"
1715	"Pods 3–11 mm wide; phyllodes 1–4 mm wide (arid zone: W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia ramulosa"
1716	"Bark 'Minni Ritchi'"	1717
1716	"Bark not 'Minni Ritchi'"	1720
1717	"Peduncles c. 1.5 mm long; phyllodes 8.5–18 cm × c. 1 mm (Qld, N.S.W.)"	"Acacia curranii"
1717	"Peduncles 4–25 mm long"	1718
1718	"Phyllodes linear-oblanceolate, to 5 cm long, with a short but distinct apical cusp, nerves few and clearly separated from one another (W.A., N.T. & Qld)"	"Acacia lysiphloia"
1718	"Phyllodes not as above"	1719
1719	"Phyllodes ±glabrous, with fine, very close nerves; receptacle glabrous or sparsely appressed-hairy (arid zone: W.A., N.T., S.A.)"	"Acacia rhodophloia"
1719	"Phyllodes appressed-puberulous, with raised, well-separated nerves; receptacle with dense, spreading hairs (SW W.A.)"	"Acacia fauntleroyi"
1720	"Heads ±sessile (peduncles all < 2 mm long)"	1721
1720	"Heads pedunculate (peduncles some or all > 2 mm long)"	1729
1721	"Pods 6–10 mm wide, coiled to twisted; aril orange and large; heads 5–15-flowered, pale yellow (all mainland States, mostly arid zone)"	"Acacia oswaldii"
1721	"Pods < 6 mm wide; aril whitish and small; heads 15–40-flowered, golden (where colour is known)"	1722
1722	"Dwarf subshrub; pods 3.5–4.5 mm wide, obliquely nerved; phyllodes 4–15 cm long, 0.8–3 mm wide (northern W.A.)"	"Acacia paula"
1722	"Tall shrubs or trees; other characters not combined as above (SW W.A. & Qld)"	1723
1723	"Phyllodes 7–15 cm long"	1724
1723	"Phyllodes < 7 cm long (SW W.A.)"	1726
1724	"Branchlets densely appressed-hairy (Qld)"	"Acacia argyrotricha"
1724	"Branchlets glabrous or hairs confined to phyllode axils (SW W.A.)"	1725
1725	"Heads 28–36-flowered, shortly pedunculate; phyllodes ±straight, with short-acuminate, gently curved to uncinate tips; seeds not mottled"	"Acacia beauverdiana"
1725	"Heads 15–25-flowered, closely sessile; phyllodes not as above; seeds mottled"	"Acacia mimica"
1726	"Phyllodes hairy"	"Acacia torticarpa"
1726	"Phyllodes glabrous"	1727
1727	"Phyllodes with a discrete, yellowish, resinous marginal nerve and evident midrib"	"Acacia crenulata"
1727	"Phyllodes nerves of uniform prominence (without a discrete, resinous marginal nerve; midrib usually not evident)"	1728
1728	"Phyllodes 20–45 × 1–4 mm, stomata evident between nerves; branchlets tomentulose with hairs extending to pulvinus"	"Acacia undosa"
1728	"Characters not combined as above"	"Acacia mimica"
1729	"Pods ±woody and normally tapered at base, opening elastically from apex, obliquely to longitudinally striate (nerves sometimes obscure); seeds oblique; branchlets glabrous (occasionally hairy on new shoots) (northern Aust.)"	1730
1729	"Pod and seed characters not combined as above; branchlets hairy (indumentum normally closely appressed) or glabrous"	1741
1730	"Phyllodes not more than 3 mm wide"	1731
1730	"Phyllodes some or all > 3 mm wide"	1735
1731	"Phyllodes 4–15 cm long, 0.8–3 mm wide; heads obloid, densely flowered (W.A.)"	"Acacia paula"
1731	"Phyllodes not more than 25 mm long"	1732
1732	"Phyllodes 3–5 (–9) × 1.5–3 mm, apical point ±setose; peduncles c. 7 mm long; heads about 20-flowered; bracteoles acuminate (W.A., N.T.)"	"Acacia setulifera"
1732	"Phyllodes not as above"	1733
1733	"Phyllodes straight (N.T.)"	"Acacia abbreviata"
1733	"Phyllodes curved to sigmoid"	1734
1734	"Heads globular (W.A., N.T.)"	"Acacia nuperrima"
1734	"Heads obloid (Qld)"	"Acacia wickhamii"
1735	"Heads obloid"	1736
1735	"Heads globular"	1737
1736	"Phyllodes 10–20 mm long, 2–5 mm wide (Qld)"	"Acacia wickhamii"
1736	"Phyllodes 30–60 mm long, 3–9 mm wide (W.A.)"	"Acacia sphaerostachya"
1737	"Inflorescences initiated on new shoots in axils of juvenile phyllodes at ends of branchlets AND phyllodes all > 30 mm long (N.T.)"	"Acacia producta"
1737	"Inflorescences not as above AND/OR phyllodes < 30 mm long"	1738
1738	"Phyllodes (4–) 9–16 (–30) mm long, (1–) 2.5–3 (–5) mm wide, l:w = (2–) 4–6 (–25), rather spreading, shallowly to prominently recurved; heads 10–20-flowered, small (W.A., N.T., Qld)"	"Acacia nuperrima"
1738	"Phyllodes not as above; heads more than 20-flowered, or if not then flower buds large"	1739
1739	"Heads 7–25-flowered, buds large and widely spreading; phyllode mucro knob-like to conical and erect (W.A.)"	"Acacia stellaticeps"
1739	"Heads more than 20-flowered, buds not widely spreading; phyllode mucro partially or wholly inflexed-appressed to phyllode margin, at least on young phyllodes"	1740
1740	"Phyllodes mostly > 2 cm long; heads 7–12 mm diam., with 40–60 flowers; peduncles c. 1 mm diam. (W.A., N.T.)"	"Acacia sp. Kununurra (G.Lullfitz 6195)"
1740	"Phyllodes < 2 cm long; heads (at anthesis) 5–9 mm diam., 20–50-flowered; peduncles c. 0.5 mm diam. (W.A., N.T.)"	"Acacia translucens"
1741	"Peduncles 10–24 mm long; viscid low shrub; stipules persistent; phyllodes 20–55 × 4–12 mm (northern W.A., N.T. & Qld)"	"Acacia phlebocarpa"
1741	"Characters not combined as above"	1742
1742	"Pods 7–12 mm wide, moniliform, striate, coriaceous; seed arils bright orange and large; phyllodes 10–33 cm long (arid zone: all mainland States except Vic.)"	"Acacia coriacea"
1742	"Pods and arils not as above; phyllodes often < 10 cm long"	1743
1743	"Phyllodes 1–3 mm wide"	1744
1743	"Phyllodes some or all > 3 mm wide"	1755
1744	"Phyllodes with midrib more prominent than other nerves (SW W.A.)"	1745
1744	"Phyllodes with nerves of uniform prominence (or midrib and some other nerves equally more prominent than the rest)"	1750
1745	"Branchlets prominently flexuose and pendulous; phyllodes mostly 8–17 cm long and strongly curved"	"Acacia anfractuosa"
1745	"Branchlets not as above; phyllodes < 8 cm long OR if not then ±straight (except apices sometimes curved)"	1746
1746	"Heads obloid (rarely globular in A. beauverdiana); phyllodes 7–18 cm long, with gently curved-acuminate apices; branchlets glabrous (ignore phyllode axils)"	1747
1746	"Heads globular; phyllodes 1.5–13 cm long"	1748
1747	"Phyllode margins resinous; peduncles glabrous, smooth or granular-resinous; seeds mottled"	"Acacia resinimarginea"
1747	"Phyllode margins not resinous; peduncles white-hairy, sometimes intermixed with reddish resin-hairs; seeds not mottled"	"Acacia beauverdiana"
1748	"Branchlets silvery-sericeous between the resinous ribs"	"Acacia heteroneura"
1748	"Branchlets glabrous"	1749
1749	"Phyllodes with discrete, yellowish, resinous marginal nerve"	"Acacia crenulata"
1749	"Phyllodes without discrete, resinous marginal nerve"	"Acacia duriuscula"
1750	"Branchlets glabrous (ignore phyllode axils)"	1751
1750	"Branchlets hairy"	1753
1751	"Phyllodes 7–13 cm long, with delicately curved acuminate apices; peduncles puberulous; pods 2–3 mm wide (W.A.)"	"Acacia beauverdiana"
1751	"Phyllodes often < 7 cm long, with apices normally straight and acute to obtuse; peduncles glabrous or puberulous"	1752
1752	"Heads globular; pods 3–4 mm wide (W.A.)"	"Acacia duriuscula"
1752	"Heads obloid to widely elliptic; pods 4–11 mm wide (W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia sibirica"
1753	"Branchlets tomentulose; phyllodes 2.5–5 (–6) cm long (SW W.A.)"	"Acacia densiflora"
1753	"Branchlets sericeous to appressed-puberulous; phyllodes normally > 6 cm long"	1754
1754	"Phyllodes innocuous or ±coarsely pungent by a straight or curved point (not acuminate), coriaceous to subrigid, grey-green, multistriate by yellowish nerves (W.A., S.A., Qld, N.S.W., Vic.)"	"Acacia rigens"
1754	"Phyllodes ending in acuminate, innocuous, normally delicately curved points, not rigid, silvery appressed-puberulous, often glabrescent, with numerous closely parallel, indistinct nerves (W.A., S.A.)"	"Acacia papyrocarpa"
1755	"Phyllodes with longitudinal nerves numerous and very close together"	1756
1755	"Phyllodes with longitudinal nerves few to numerous and not very close together (inter-nerve distance more than twice diameter of nerves)"	1764
1756	"Branchlets and phyllodes glabrous (ignore phyllode axils and pulvinus)"	1757
1756	"Branchlets and/or phyllodes sericeous (hairs commonly closely appressed, observe carefully at ×10 mag.)"	1761
1757	"Phyllodes 2–6 cm long, 2–5.5 mm wide, with evident midrib, and marginal nerves discrete, yellowish and resinous (SW W.A.)"	"Acacia crenulata"
1757	"Phyllode characters not combined as above"	1758
1758	"Peduncles 8–15 mm long; phyllodes 6–14.5 cm long, 5–10 mm wide, shallowly incurved (NW W.A.)"	"Acacia atkinsiana"
1758	"Peduncles < 8 mm long OR if not then phyllode characters not combined as above"	1759
1759	"Phyllodes 5–6 mm wide, with delicately curved acuminate apices; peduncles puberulous at base (W.A.)"	"Acacia beauverdiana"
1759	"Phyllode characters not combined as above; peduncles glabrous or puberulous"	1760
1760	"Heads globular; pods 3–4 mm wide (W.A.)"	"Acacia duriuscula"
1760	"Heads obloid to widely elliptic; pods 4–11 mm wide (W.A., N.T., S.A., Qld, N.S.W.)"	"Acacia sibirica"
1761	"Phyllodes 2–6 mm wide, midrib conspicuous and often raised"	1762
1761	"Phyllodes some or all > 6 mm wide OR if not then midrib not raised; heads obloid; seeds not mottled"	1763
1762	"Heads widely ellipsoid to obloid, densely flowered; phyllodes 8–19 cm long, 3–6 mm wide; seeds not mottled"	"Acacia ampliata"
1762	"Heads globular, subdensely flowered; phyllodes 5–7 (–11) cm long, 2–4 mm wide; seeds mottled"	"Acacia heteroneura"
1763	"Phyllodes without resin-haired margins; calyx deeply lobed; pods 2–3 mm wide"	"Acacia coolgardiensis"
1763	"Phyllodes (at least when young) with minute, appressed, reddish resin-hairs; calyx shortly lobed; pods 4–5 mm wide"	"Acacia incanicarpa"
1764	"Phyllodes punctate, 6–9 cm long (N.S.W., Vic.)"	"Acacia subporosa"
1764	"Phyllodes not punctate, < 6 cm long"	1765
1765	"Phyllodes linear-oblanceolate, with gland 5–10 mm above pulvinus (Vic.)"	"Acacia lanigera"
1765	"Phyllodes narrowly elliptic to oblong-elliptic, gland at distal end of pulvinus (SW W.A.)"	1766
1766	"Pods undulate to plicate; branchlets appressed-puberulous; phyllodes ±straight"	"Acacia vittata"
1766	"Pods not undulate or plicate; branchlets glabrous or subglabrous; phyllodes subfalcate, rarely straight"	"Acacia recurvata"
1767	"Inflorescences elongated racemes (exceeding 1 cm long) or paniculate; stipules inconspicuous; prickles absent (eastern Aust.)"	1768
1767	"Inflorescences simple (peduncles solitary to clustered) or in very short racemes < 5 mm long"	1888
1768	"Pinnules > 2 mm wide"	1769
1768	"Pinnules < 2 mm wide"	1790
1769	"Lower surface of pinnules distinctly paler than upper surface"	1770
1769	"Lower surface of pinnules same colour as or only very slightly paler than upper surface"	1773
1770	"Pinnules usually 20–60 mm long; heads 30–50-flowered"	"Acacia elata"
1770	"Pinnules up to 20 mm long; heads 5–16-flowered"	1771
1771	"Branchlets with convoluted, winged ridges to 3 mm high"	"Acacia alaticaulis"
1771	"Branchlets ridged, not winged"	1772
1772	"Petiole above pulvinus 0.7–4.5 cm long; pinnules ±flat, shiny above"	"Acacia terminalis"
1772	"Petiole above pulvinus to 0.5 cm long; pinnules recurved, not shiny"	"Acacia kulnurensis"
1773	"Branchlets glabrous"	1774
1773	"Branchlets sparsely to densely hairy"	1784
1774	"Apex of pinnules obtuse and markedly mucronulate"	"Acacia polybotrya"
1774	"Apex of pinnules acute to emarginate, not mucronulate"	1775
1775	"Most pinnae with less than 10 pairs of pinnules"	1776
1775	"Pinnae with 10 or more pairs of pinnules"	1779
1776	"Branchlets distinctly pruinose; heads 40–60-flowered"	"Acacia pruinosa"
1776	"Branchlets not or rarely slightly pruinose; most heads with less than 40 flowers"	1777
1777	"Pinnae 3–10 cm long; leaves greyish green"	"Acacia debilis"
1777	"Pinnae not more than 4.5 cm long"	1778
1778	"Leaves reddish, not glaucous; pods 5–10 mm wide"	"Acacia latisepala"
1778	"Leaves blue-green, glaucous; pods mostly 10–15 mm wide"	"Acacia spectabilis"
1779	"Pinnules with hairs on upper and/or lower surfaces"	1780
1779	"Pinnules glabrous or with hairs only on margins"	1781
1780	"Heads golden; leaves light green, glaucous; tree to 25 m high; most pinnae with 12–14 pairs of pinnules"	"Acacia blayana"
1780	"Heads pale yellow or cream; leaves blue-green, glaucous; shrub or tree 2.5–10 m high; pinnae with 12–33 pairs of pinnules"	"Acacia glaucocarpa"
1781	"Branchlets pruinose"	1782
1781	"Branchlets not pruinose"	1783
1782	"Heads golden; pods smooth, not moniliform; pinnules completely glabrous"	"Acacia pruinosa"
1782	"Heads pale yellow; pods scabrous, submoniliform; pinnule margins hairy"	"Acacia schinoides"
1783	"Bark smooth; flowers golden or yellow; pods submoniliform, glabrous; leaves greyish green, not glaucous"	"Acacia debilis"
1783	"Bark slightly fissured, becoming rough at base; flowers pale yellow or cream; pods not submoniliform, glaucous, sparsely fawn-puberulous; leaves blue-green, glaucous"	"Acacia glaucocarpa"
1784	"Apex of pinnules obtuse and markedly mucronulate"	"Acacia polybotrya"
1784	"Apex of pinnules acuminate to emarginate, not mucronulate"	1785
1785	"Pinnae with less than 10 pairs of pinnules"	"Acacia spectabilis"
1785	"Pinnae with more than 10 pairs of pinnules"	1786
1786	"Pinnules ±glabrous, sometimes margins ciliate"	1787
1786	"Pinnules with hairs on one or both surfaces"	1788
1787	"Leaves dark green, not glaucous; pods blackish brown, not glaucous; pinnule margins appressed-ciliolate"	"Acacia cangaiensis"
1787	"Leaves blue-green, glaucous; pods blue-green or blue-black, glaucous; pinnule margins not ciliolate"	"Acacia glaucocarpa"
1788	"Pinnule apex sharply acute to acuminate; lower pinnule surface lanate; pods 4–6.5 mm wide, densely lanate"	"Acacia fulva"
1788	"Pinnule apex subacute to truncate; lower pinnule surface hairy (but not lanate); pods 6.5–11 mm wide, sparsely hairy or glabrous"	1789
1789	"Flowers golden; leaves light green, glaucous; tree to 25 m high; most pinnae with 12–14 pairs of pinnules"	"Acacia blayana"
1789	"Flowers pale yellow or cream; leaves blue-green, glaucous; shrub or tree 2.5–10 m high; pinnae with 12–33 pairs of pinnules"	"Acacia glaucocarpa"
1790	"Jugary glands present"	1791
1790	"Jugary glands absent"	1871
1791	"Interjugary glands present"	1792
1791	"Interjugary glands absent"	1826
1792	"Most pinnules > 10 mm long"	1793
1792	"Most pinnules < 10 mm long"	1794
1793	"Pinnules usually 10–20 mm long; branchlets terete; pinnae usually 3 or 4 pairs (NE N.S.W.)"	"Acacia cangaiensis"
1793	"Pinnules usually to 12 mm long; branchlets slightly flattened, acutely angled towards apex; pinnae usually 3–12 pairs (inland southern Qld, central N.S.W. and central Vic.)"	"Acacia deanei"
1794	"Branchlets distinctly hairy"	1795
1794	"Branchlets ±glabrous"	1813
1795	"Pinnules distinctly hairy on one or both surfaces"	1796
1795	"Pinnules ±glabrous on both surfaces, sometimes margins ciliolate"	1806
1796	"Pinnules narrowly lanceolate to ovate"	1797
1796	"Pinnules usually oblong to cultrate, sometimes linear or slightly spathulate"	1798
1797	"Pinnules silvery grey, lanate, 1–2 mm wide; pods densely lanate; shrub or tree usually 1.5–10 m high"	"Acacia fulva"
1797	"Pinnules green and glabrous above, silvery when dried, 0.7–1.5 mm wide; pods subglabrous; tree 6–30 m high"	"Acacia silvestris"
1798	"Heads yellow or golden"	1799
1798	"Heads pale yellow to cream"	1802
1799	"Leaves subsessile, with basal pinnae usually arising ±immediately above pulvinus; bark fissured"	"Acacia chrysotricha"
1799	"Leaves with petiole above pulvinus 0.4–3 cm long; bark smooth, or smooth on upper trunk and corrugated or fissured below"	1800
1800	"Petiole above pulvinus not flattened, with a single gland; leaves not glaucous; pods black or dark brown, not glaucous"	"Acacia deanei"
1800	"Petiole above pulvinus vertically flattened"	1801
1801	"Petiole with a gland near base of lowest pinnae, and usually 1–4 additional glands; leaves discolorous, dark green above, paler below; pods blue to blue-black, pruinose"	"Acacia filicifolia"
1801	"Petiole eglandular or with a single apical or median gland; leaves concolorous, green or silvery, ±glaucous; pods red brown or brownish grey, ±glaucous"	"Acacia leucoclada"
1802	"Leaves dark green and glossy above, concolorous or slightly paler below; petiole not flattened; pinnae with (16–) 25–78 pairs of pinnules (S.A., N.S.W., Vic., Tas.)"	"Acacia mearnsii"
1802	"Leaves dark or light green, not glossy above, concolorous; petiole vertically flattened; pinnae with 10–35 (–49) pairs of pinnules"	1803
1803	"Petiole with more than one gland; heads with 14–18 flowers; bark silvery or blue-grey"	"Acacia parvipinnula"
1803	"Petiole with one gland (rarely two); heads with 15–32 flowers; bark not silvery or blue-grey"	1804
1804	"Branchlets slightly flattened, acutely angled towards apex; pinnae to 7.5 cm long; pinnules to 10 mm long"	"Acacia deanei"
1804	"Branchlets ridged (at least when young), not flattened; pinnae to 3 cm long; pinnules 1–2 (–3) mm long"	1805
1805	"Pinnules broadly auriculate at base; heads with 19–23 flowers; leaves not fleshy, with leaf rachis3.5–8 cm long (Qld)"	"Acacia loroloba"
1805	"Pinnules not broadly auriculate at base; heads with 30–32 flowers; leaves fleshy, with rachis usually 1.5–5 cm long (N.S.W.)"	"Acacia constablei"
1806	"Lower surface of pinnules distinctly paler than upper surface"	1807
1806	"Lower surface of pinnules ±the same colour as upper surface"	1808
1807	"Most pinnules 4–10 mm long; heads with 20–30 flowers"	"Acacia filicifolia"
1807	"Most pinnules < 4 mm long; heads with 12–20 flowers"	"Acacia nanodealbata"
1808	"Petiole above pulvinus vertically flattened"	1809
1808	"Petiole above pulvinus not vertically flattened"	1812
1809	"Branchlets slightly flattened, acutely angled towards apex; pinnules to 10 mm long"	"Acacia deanei"
1809	"Branchlets ridged (at least when young), not flattened; most pinnules 1–4 mm long"	1810
1810	"Pinnules broadly auriculate at base (Qld)"	"Acacia loroloba"
1810	"Pinnules not broadly auriculate at base (N.S.W.)"	1811
1811	"Heads with 14–18 flowers; pinnules mostly 2–4 (–5) mm long, not fleshy; young foliage-tips white or yellow"	"Acacia parvipinnula"
1811	"Heads with 30–32 flowers; pinnules 1–2.5 mm long, fleshy; young foliage-tips sulphur-yellow"	"Acacia constablei"
1812	"Heads with 14–20 flowers; pinnae usually 5–8 pairs; pinnules 0.8–3.6 mm long"	"Acacia pedleyi"
1812	"Heads with 20–40 flowers; pinnae usually 6–16 pairs; pinnules 2–7 (–9) mm long"	"Acacia parramattensis"
1813	"Pinnules distinctly hairy on one or both surfaces"	1814
1813	"Pinnules ±glabrous on both surfaces, sometimes margins ciliolate"	1817
1814	"Branchlets pruinose; leaves and pods ±glaucous"	"Acacia leucoclada"
1814	"Branchlets not pruinose; leaves and pods not glaucous"	1815
1815	"Petiole above pulvinus with 2 or more glands; branchlets often glaucous"	"Acacia parvipinnula"
1815	"Petiole above pulvinus with a single gland; branchlets not glaucous"	1816
1816	"Branchlets slightly flattened, acutely angled towards apex; pinnae usually 3–12 pairs; pinnules to 10 mm long (Qld, N.S.W., Vic.)"	"Acacia deanei"
1816	"Branchlets markedly ridged when young, not flattened; pinnae 10–18 pairs; pinnules 1–2 (–3) mm long (Qld)"	"Acacia loroloba"
1817	"Lower surface of pinnules distinctly paler than upper surface"	1818
1817	"Lower surface of pinnules ±the same colour as upper surface"	1819
1818	"Petiole above pulvinus flattened vertically, usually with more than one gland; pinnules 23–68 (–93) pairs, usually 4–10 mm long; heads with 20–30 flowers, dark yellow"	"Acacia filicifolia"
1818	"Petiole above pulvinus not flattened vertically, with a single gland; pinnules 9–34 pairs, < 2.5 mm long; heads with 12–20 flowers, golden"	"Acacia nanodealbata"
1819	"Heads with more than 20 flowers"	1820
1819	"Heads with less than 20 flowers"	1822
1820	"Petiole above pulvinus not flattened vertically"	"Acacia parramattensis"
1820	"Petiole above pulvinus flattened vertically"	1821
1821	"Branchlets slightly flattened, acutely angled towards apex; pinnae usually 3–12 pairs; pinnules to 10 mm long (Qld, N.S.W., Vic.)"	"Acacia deanei"
1821	"Branchlets markedly ridged when young, not flattened; pinnae 10–18 pairs; pinnules 1–2 (–3) mm long (Qld)"	"Acacia loroloba"
1822	"Pinnae with more than 50 pairs of pinnules"	1823
1822	"Pinnae with less than 50 pairs of pinnules"	1824
1823	"Shrub or tree to 6 m high; heads cream or pale yellow, 14–20-flowered; branchlets sometimes glaucous (Qld)"	"Acacia storyi"
1823	"Tree 3–15 m high; heads deep yellow, 7–12-flowered; branchlets pruinose (SE N.S.W.)"	"Acacia olsenii"
1824	"Pinnules to 10 mm long; branchlets not glaucous or pruinose; heads with 15–30 flowers"	"Acacia deanei"
1824	"Pinnules < 5 mm long; branchlets often glaucous; heads with 14–20 flowers"	1825
1825	"Pods 5–9 mm wide, glabrous or with minute appressed hairs; petiole above pulvinus mostly 0.5–1.7 cm long, usually with 2–4 glands (N.S.W.)"	"Acacia parvipinnula"
1825	"Pods 8–12 mm wide, glabrous, sometimes glaucous; petiole above pulvinus mostly 1.2–2.3 cm long, usually with 1 or 2 glands (Qld)"	"Acacia storyi"
1826	"Pinnules of most leaves < 5 mm long"	1827
1826	"Pinnules of most leaves > 5 mm long"	1859
1827	"Most pinnae with less than 20 pairs of pinnules"	1828
1827	"Most pinnae with more than 20 pairs of pinnules"	1845
1828	"Most heads with not more than 15 flowers"	1829
1828	"Heads with more than 15 flowers"	1836
1829	"Branchlets with convoluted winged ridges to 3 mm high; petiole and leaf rachis winged"	"Acacia alaticaulis"
1829	"Branchlets, petiole and leaf rachis not winged"	1830
1830	"Heads pale yellow to cream"	1831
1830	"Heads yellow to golden or deep yellow"	1832
1831	"Petiole 0.7–4.3 cm long; pinnae 1–8 pairs, 1.3–9 cm long; pinnules shiny on upper surface"	"Acacia terminalis"
1831	"Petiole to 0.5 cm long; pinnae 3–13 pairs, 0.5–4.5 cm long; pinnules not shiny on upper surface"	"Acacia kulnurensis"
1832	"Pinnules ±concolorous, ±silvery glaucous"	"Acacia chinchillensis"
1832	"Pinnules discolorous, dark to mid green above, paler below (sometimes only evident when fresh)"	1833
1833	"Leaves subsessile with basal pinnae arising < 0.7 mm above pulvinus; pods 4–8 mm wide"	1834
1833	"Leaves with petiole above pulvinus 0.5–4.5 cm long; pods 9–20 mm wide"	1835
1834	"Weeping shrub; pinnules bright green above, cultrate to oblong, 0.4–1 mm wide, not apically reflexed"	"Acacia pubescens"
1834	"Spreading, slender or straggling shrub; pinnules dark green above, narrowly lanceolate to narrowly oblong, 0.8–1.8 mm wide, apically ±reflexed"	"Acacia jonesii"
1835	"Shrub or occasionally small tree to 6 m high; pinnules shiny on upper surface, mostly acute to acuminate (N.S.W., Vic. Tas.)"	"Acacia terminalis"
1835	"Tree to 12 m high; pinnules not shiny on upper surface, subacute to truncate or emarginate (Vic.)"	"Acacia nanodealbata"
1836	"Upper surface of pinnules grey- or blue-green or silvery"	1837
1836	"Upper surface of pinnules green"	1840
1837	"Leaves with 2–4 pairs of pinnae"	1838
1837	"Leaves with 4–30 pairs of pinnae"	1839
1838	"Heads with 20–35 flowers; pinnule apices obtuse and markedly mucronulate; pinnae 1–4.5 cm long"	"Acacia polybotrya"
1838	"Heads with 11–22 flowers; pinnule apices acute, bluntly apiculate or broadly rounded; pinnae < 2 cm long"	"Acacia chinchillensis"
1839	"Upper surface of pinnules glaucous, ±glabrous or puberulous; pinnae 6–30 pairs; bushy shrub or spreading tree to 30 m high"	"Acacia dealbata"
1839	"Upper surface of pinnules silvery, velvety; pinnae 4–10 pairs; pendulous shrub or tree 1.5–6 m high, with mallee habit"	"Acacia mollifolia"
1840	"Most heads with 30 or more flowers; shrub usually < 3 m high"	1841
1840	"Most heads with less than 30 flowers; shrubs or trees to 12 m high"	1842
1841	"Heads with 30–45 flowers; golden or dark yellow; leaves subsessile, with basal pinnae arising ±immediately above pulvinus; pinnae 1–5 pairs"	"Acacia leptoclada"
1841	"Heads with 30–32 flowers; pale yellow or cream; petiole above pulvinus vertically flattened, 0.2–1 cm long; pinnae 6–19 pairs"	"Acacia constablei"
1842	"Leaves discolorous, dark green above, paler below"	1843
1842	"Leaves concolorous, dark green to pale green"	1844
1843	"Heads with 15–30 flowers; pods 4–6 mm wide; leaves subsessile, with basal pinnae arising ±immediately above pulvinus"	"Acacia chrysotricha"
1843	"Heads with 12–20 flowers; pods 9–20 mm wide; petiole above pulvinus usually 0.5–1.6 cm long"	"Acacia nanodealbata"
1844	"Leaves subsessile or with petiole above pulvinus not more than 2 mm long; pinnule bases obliquely subcordate; heads golden"	"Acacia cardiophylla"
1844	"Leaves with petiole above pulvinus 0.4–3 cm long, vertically flattened; pinnule bases rounded; heads yellow to cream"	"Acacia deanei"
1845	"Most pinnae with more than 50 pairs of pinnules"	1846
1845	"Most pinnae with less than 50 pairs of pinnules"	1848
1846	"Heads with 7–12 flowers, deep yellow; branchlets pruinose"	"Acacia olsenii"
1846	"Heads with 15–50 flowers, usually cream to pale yellow; branchlets not pruinose"	1847
1847	"Pinnules 1–3.5 mm long, dark green and glossy above, ciliate; heads with 20–38 flowers; jugary glands orbicular"	"Acacia mearnsii"
1847	"Pinnules mostly 2–5 mm long, dark green but not glossy above, not ciliate; heads with 15–50 flowers; jugary glands pouched"	"Acacia irrorata"
1848	"Upper surface of pinnules grey-green or silvery"	1849
1848	"Upper surface of pinnules green"	1851
1849	"Pinnae 4–10 pairs; pendulous shrub or tree 1.5–6 m high with mallee habit"	"Acacia mollifolia"
1849	"Pinnae 6–30 pairs; erect or bushy shrub or tree to 30 m high, not with mallee habit"	1850
1850	"Petioles with apical gland; jugary glands at base of each pair of pinnae; heads of 17–42 flowers"	"Acacia dealbata"
1850	"Petioles eglandular; jugary glands at base of upper 2–10 pairs of pinnae only; heads with up to 20 flowers"	"Acacia trachyphloia"
1851	"Most pinnules < 2 mm long"	1852
1851	"Most pinnules > 2 mm long"	1855
1852	"Most heads with more than 20 flowers"	1853
1852	"Heads with up to 20 flowers"	1854
1853	"Petiole above pulvinus 0.5–2.5 cm long, not vertically flattened; pinnae usually with more than 25 pairs of pinnules, not fleshy"	"Acacia mearnsii"
1853	"Petiole above pulvinus 0.2–1 cm long, vertically flattened; pinnae with 9–30 pairs of pinnules, fleshy"	"Acacia constablei"
1854	"Branchlets grey-puberulous to glabrous, often glaucous; leaves ±coriaceous, dark green on upper surface, paler below; pods 9–20 mm wide"	"Acacia nanodealbata"
1854	"Branchlets white- to golden-villous; leaves herbaceous, ±concolorous; pods 4–8 mm wide"	"Acacia trachyphloia"
1855	"Jugary glands present at base of apical and/or basal pairs of pinnae, not present at pinnae pairs towards middle of leaf"	1856
1855	"Jugary glands present at base of most or all pairs of pinnae"	1857
1856	"Heads of 15–30 flowers, golden; pinnules discolorous, usually 12–25 pairs, 1–1.5 mm wide"	"Acacia chrysotricha"
1856	"Heads of 15–50 flowers, usually pale yellow or cream, rarely deeper yellow; pinnules concolorous, 15–72 pairs, 0.4–0.7 mm wide"	"Acacia irrorata"
1857	"Heads 15–30-flowered; branchlets slightly flattened, acutely angled towards apices; petioles flattened vertically"	"Acacia deanei"
1857	"Heads 20–40-flowered; branchlets ±terete or slightly angular, ridged; petioles not flattened vertically"	1858
1858	"Pinnules glabrous except for margins; branchlets appressed-puberulous, glabrescent"	"Acacia parramattensis"
1858	"Pinnules densely hairy on lower surface; branchlets velvety-pubescent"	"Acacia mearnsii"
1859	"Most pinnae with less than 10 pairs of pinnules"	1860
1859	"Pinnae with more than 10 pairs of pinnules"	1864
1860	"Heads yellow to golden"	1861
1860	"Heads cream to pale yellow"	1862
1861	"Pinnules ±concolorous, ±silvery glaucous"	"Acacia chinchillensis"
1861	"Pinnules discolorous, dark green and shiny above, paler below"	"Acacia terminalis"
1862	"Pinnules concolorous; petioles vertically flattened, deeply grooved"	"Acacia muelleriana"
1862	"Pinnules discolorous, paler on lower surface; petioles not vertically flattened, not deeply grooved"	1863
1863	"Petioles 0.7–4.3 cm long; pinnae 1–8 pairs, 1.3–9 cm long"	"Acacia terminalis"
1863	"Petioles to 0.5 cm long; pinnae 3–13 pairs, 0.5–4.5 cm long"	"Acacia kulnurensis"
1864	"Pinnules discolorous, lower surface distinctly paler than upper surface"	1865
1864	"Pinnules ±concolorous"	1867
1865	"Branchlets with convoluted, winged ridges to 3 mm high"	"Acacia alaticaulis"
1865	"Branchlets ridged, not winged"	1866
1866	"Petiole above pulvinus 7–45 mm long; pinnules ±flat, shiny above"	"Acacia terminalis"
1866	"Petiole above pulvinus to 5 mm long; pinnules recurved, not shiny above"	"Acacia kulnurensis"
1867	"Branchlets with prominent winged ridges 0.5–2 mm high"	"Acacia decurrens"
1867	"Branchlets smooth or angled, if ridged then ridges not more than c. 0.2 mm high"	1868
1868	"Pinnules glaucous or silvery grey"	"Acacia mollifolia"
1868	"Pinnules green"	1869
1869	"Branchlets terete with 4–6 ridges c. 0.2 mm high, glabrous, with numerous lenticels; young foliage tips blackish brown, almost glabrous"	"Acacia dangarensis"
1869	"Branchlets terete to slightly flattened, sometimes angled to inconspicuously ridged, hairy to glabrous, not lenticellate; young foliage tips yellow to rust-coloured, densely hairy"	1870
1870	"Petiole flattened vertically, densely puberulous; leaf rachis flattened vertically; branchlets slightly flattened, acutely angled towards apex"	"Acacia deanei"
1870	"Petiole and leaf rachis not flattened vertically, not densely hairy; branchlets almost terete to slightly angled"	"Acacia parramattensis"
1871	"Interjugary glands present"	1872
1871	"Interjugary glands absent"	1876
1872	"Pinnules narrowly lanceolate to ovate, markedly acute to acuminate"	1873
1872	"Pinnules linear to oblong or cultrate, acute to rounded"	1874
1873	"Pinnules 11–28 pairs, lanate on both surfaces, sparser above; pods densely lanate"	"Acacia fulva"
1873	"Pinnules 17–50 pairs, with white straight hairs below (but not lanate), glabrous above; pods subglabrous"	"Acacia silvestris"
1874	"Pinnules mostly > 4 mm long; heads dark yellow"	"Acacia filicifolia"
1874	"Pinnules mostly < 4 mm long; heads pale yellow or cream"	1875
1875	"Pinnules discolorous, with lower surface paler than upper surface; bark smooth or fissured, grey-green or dark brown"	"Acacia oshanesii"
1875	"Pinnules concolorous; bark smooth, very silvery or blue-grey"	"Acacia parvipinnula"
1876	"Pinnules discolorous, paler below"	1877
1876	"Pinnules ±concolorous on upper and lower surfaces"	1881
1877	"Branchlets with convoluted, winged ridges to 3 mm high"	"Acacia alaticaulis"
1877	"Branchlets ridged, not winged"	1878
1878	"Petiole above pulvinus 0.3–4.5 cm long"	1879
1878	"Leaves subsessile with basal pinnae arising less than 0.7 mm above pulvinus"	1880
1879	"Petiole above pulvinus 0.7–4.5 cm long; pinnules ±flat, shiny above"	"Acacia terminalis"
1879	"Petiole above pulvinus to 0.5 cm long; pinnules recurved, not shiny above"	"Acacia kulnurensis"
1880	"Most heads with less than 15 flowers; weeping shrub 1–5 m high"	"Acacia pubescens"
1880	"Heads with at least 15 flowers; tree 6–15 (–21) m high"	"Acacia chrysotricha"
1881	"Most pinnules > 5 mm long"	1882
1881	"Most pinnules < 5 mm long"	1885
1882	"Petiole above pulvinus vertically flattened, deeply grooved; heads cream-coloured"	"Acacia muelleriana"
1882	"Petiole above pulvinus not vertically flattened or grooved; heads golden or yellow"	1883
1883	"Most heads with less than 20 flowers; pinnae < 1.5 (–2) cm long (SE Qld)"	"Acacia chinchillensis"
1883	"Heads with more than 20 flowers; pinnae usually > 1.5 cm long"	1884
1884	"Pinnae usually 3–6 pairs, 4–13 cm long; pinnules 10–28 pairs; heads 27–50-flowered, pale yellow (central coastal N.S.W.)"	"Acacia schinoides"
1884	"Pinnae usually 2–4 pairs, 1–4.5 cm long; pinnules 4–12 pairs; heads 20–35-flowered, golden (SE Qld & N.S.W.)"	"Acacia polybotrya"
1885	"Leaves with 1–5 pairs of pinnae"	1886
1885	"Leaves with more than 5 pairs of pinnae"	1887
1886	"Most heads with less than 20 flowers; petiole 0.1–0.6 cm long; leaves silvery-glaucous"	"Acacia chinchillensis"
1886	"Heads with 30–45 flowers; leaves subsessile, with basal pinnae arising ±immediately above pulvinus; leaves dark green"	"Acacia leptoclada"
1887	"Heads golden or yellow, 16–32-flowered; leaves dark green, with petiole above pulvinus mostly 0.5–1.7 cm long, vertically flattened"	"Acacia cardiophylla"
1887	"Heads pale yellow, 14–18-flowered; leaves pale green, subsessile, with basal pinnae arising ±immediately above pulvinus"	"Acacia parvipinnula"
1888	"Leaves all with a single pair of pinnae (SW W.A.)"	1889
1888	"Some or all leaves with more than 1 pair of pinnae"	1909
1889	"Pinnules prominently recurved to revolute"	1890
1889	"Pinnules flat"	1894
1890	"Leaf axis clearly continuous and decurrent with branchlet; terminal seta robust and spinose; stipules spinose"	"Acacia anarthros"
1890	"Leaf axis not continuous and decurrent with branchlet; terminal seta and stipules not spinose"	1891
1891	"Inflorescences borne on axillary spines; pinnules 2 pairs per pinna, 6–10 mm long"	"Acacia epacantha"
1891	"Inflorescences arising from within axil of leaves; pinnule characters not combined as above"	1892
1892	"Peduncles glabrous; axillary spines absent"	"Acacia empelioclada"
1892	"Peduncles hairy"	1893
1893	"Heads 16–50-flowered; peduncles 2–12 mm long; axillary spines present or absent"	"Acacia lasiocarpa"
1893	"Acacia heads 50–75-flowered; peduncles 10–25 mm long; axillary spines absent"	"Acacia guinetii"
1894	"Axillary spines present (sometimes few)"	1895
1894	"Axillary spines absent (stipules occasionally spinose)"	1901
1895	"Peduncles 1–2 mm long"	1896
1895	"Peduncles > 2 mm long"	1897
1896	"Pinnules ±glaucous; stipitate gland normally not more than 0.5 mm long; seeds mottled, transverse to oblique"	"Acacia amputata"
1896	"Pinnules green; stipitate gland 1–2 mm long; seeds not mottled, longitudinal"	"Acacia pulchella"
1897	"Peduncles glabrous"	1898
1897	"Peduncles hairy (hairs often minute)"	1899
1898	"Heads 10–40 (–60)-flowered; peduncles rarely > 15 mm long; branchlets often glabrous"	"Acacia pulchella"
1898	"Heads 80–90-flowered; peduncles 15–25 mm long; branchlets pubescent to villous"	"Acacia megacephala"
1899	"Inflorescences borne on the axillary spines; pods 7–12 mm wide"	"Acacia fagonioides"
1899	"Inflorescences arising from within axil of leaves; pods 1.5–5 mm wide"	1900
1900	"Branchlet hairs patent, absent, or if appressed then antrorse"	"Acacia pulchella"
1900	"Branchlet hairs retrorsely appressed"	"Acacia lasiocarpa"
1901	"Petiole 5–25 mm long; branchlets not spinose; pinnae 10–40 mm long"	1902
1901	"Petiole to 5 mm long OR if longer then branchlets spinose; pinnae to 30 mm long"	1903
1902	"Flowers 5-merous; heads c. 20-flowered; pinnules 5–11 mm long"	"Acacia tayloriana"
1902	"Flowers 4-merous; heads 2–8-flowered; pinnules 8–20 mm long"	"Acacia gilbertii"
1903	"Prostrate shrubs; petiole 3–4 mm long; branchlets obviously spinose"	"Acacia depressa"
1903	"Erect shrubs; petiole usually to 2 mm long; branchlets innocuous or coarsely spinose"	1904
1904	"Peduncles hairy"	1905
1904	"Peduncles glabrous"	1907
1905	"Flowers in cylindrical spikes"	"Acacia drummondii"
1905	"Flowers in globular heads"	1906
1906	"Gland at distal end of petiole, sessile"	"Acacia moirii"
1906	"Gland within axil of pinnae, stipitate"	"Acacia pulchella"
1907	"Pinnae mostly with 2 pairs of pinnules; heads 10–13-flowered"	"Acacia newbeyi"
1907	"Pinnae with 3–10 pairs of pinnules; heads 20–43-flowered"	1908
1908	"Gland on rachis at base of pinnae, sessile; pinnae 10–30 mm long; pinnules 4–10 mm long"	"Acacia empelioclada"
1908	"Gland within axil of pinnae stipitate; pinnae usually 5–12 mm long; pinnules 2–5 mm long"	"Acacia pulchella"
1908	"Gland sessile; pinnae 10–30 mm long; pinnules 4–10 mm long"	"Acacia empelioclada"
1909	"Flowers in cylindrical spikes (SW W.A.)"	1910
1909	"Flowers in globular or obloid heads"	1914
1910	"Pinnules flat or margins slightly recurved"	1911
1910	"Pinnules prominently recurved to revolute"	1912
1911	"Pinnules glabrous or sometimes minutely hairy on margins"	"Acacia drummondii"
1911	"Pinnules ±conspicuously hairy, with hairs not restricted to margins"	"Acacia varia"
1912	"Spikes cream to very pale yellow; gland usually absent from petiole, present on rachis at base of pinnae"	"Acacia luteola"
1912	"Spikes usually golden; gland present on petiole, present or absent on rachis"	1913
1913	"Hairs on peduncles retrorsely appressed, rarely patent; gland absent from rachis at base of pinnae; seeds light brown"	"Acacia drummondii"
1913	"Hairs on peduncles patent, rarely absent; gland often present on rachis at base of pinnae; seeds dark brown to black"	"Acacia varia"
1914	"Branchlets glabrous (SW W.A.)"	1915
1914	"Branchlets hairy (indumentum sometimes sparse)"	1923
1915	"Pinnules prominently revolute"	1916
1915	"Pinnules flat or margins slightly recurved"	1918
1916	"Pinnae mostly with 4 or 5 pairs of pinnules; rachis to 10 mm long"	"Acacia preissiana"
1916	"Pinnae mostly with 2 or 3 pairs of pinnules; rachis 2–4 mm long"	1917
1917	"Heads golden; branchlets not prominently ribbed"	"Acacia varia"
1917	"Heads cream to pale yellow; branchlets prominently ribbed"	"Acacia luteola"
1918	"Flowers 4-merous; heads white, 2–8-flowered"	"Acacia gilbertii"
1918	"Flowers 5-merous; heads cream to golden, more than 10-flowered"	1919
1919	"Leaves large (pinnae 2–5 pairs, rachis 10–55 mm long, distal pinnae 25–80 mm long with 12–30 pairs of ±sessile pinnules)"	"Acacia pentadenia"
1919	"Leaves smaller than above; pinnules petiolulate"	1920
1920	"Heads 28–35-flowered"	1921
1920	"Heads 12–26-flowered; gland absent on distal pinnae"	1922
1921	"Gland (small & sessile) normally present on distal pinnae at base of uppermost 1 or 2 pairs of pinnules; stipules persistent, 2.5–4 mm long; pods 6–8 mm wide (near Albany to Fitzgerald River Natl Park, W.A.)"	"Acacia leioderma"
1921	"Gland absent from distal pinnae; stipules mostly caducous, 1–2 mm long; pods 7–11 mm wide (near Dunsborough, W.A.)"	"Acacia lateriticola"
1922	"Heads twinned on extremely reduced raceme axes, with 1–3 racemes in each leaf axil (Esperance district, W.A.)"	"Acacia nigricans"
1922	"Heads not on racemes, 1 or 2 in each axil (near Perth to Albany, W.A.)"	"Acacia browniana"
1923	"Sepals free (eastern Aust.)"	"Acacia mitchellii"
1923	"Sepals united, at least in lower half (SW W.A.)"	1924
1924	"Peduncles hairy to some degree"	1925
1924	"Peduncles completely glabrous"	1934
1925	"Pinnules flat or with margins slightly recurved"	1926
1925	"Pinnules prominently recurved to revolute"	1929
1926	"Petiole 6–17 mm long; pinnules 5–11 × 3–5 mm, hirsute below, glabrous above; prostrate shrubs"	"Acacia tayloriana"
1926	"Petiole c. 1 mm long; pinnules not as above; erect shrubs"	1927
1927	"Heads 40–55-flowered, golden; pinnules 6–15 mm long"	"Acacia plicata"
1927	"Heads 14–21-flowered, creamy white to pale yellow; pinnules 2–6 mm long"	1928
1928	"Leaves large (pinnae 3–6 pairs, rachis 15–55 mm long; distal pinnae 15–50 mm long with 7–13 pairs of ±sessile pinnules)"	"Acacia subracemosa"
1928	"Leaves smaller than above; pinnules petiolulate"	"Acacia browniana"
1929	"Heads globular"	1930
1929	"Heads obloid"	1933
1930	"Leaves clearly continuous and decurrent with branchlet; petiole absent (proximal pinnae arising at junction of leaf axis and branchlet)"	"Acacia drewiana"
1930	"Leaves not continuous and decurrent with branchlet; petiole present but short (1–2 mm long)"	1931
1931	"Heads 40–55-flowered; bracteole hairs long (c. 1.5 mm); peduncle hairs short (< 0.5 mm); pods very undulate; shrubs erect"	"Acacia plicata"
1931	"Heads 16–30-flowered; bracteole hairs shorter than above; peduncle hairs normally c. 1 mm long; pods flat"	1932
1932	"Heads light golden; shrubs ±prostrate"	"Acacia preissiana"
1932	"Heads cream to pale yellow; shrubs erect"	"Acacia luteola"
1933	"Heads golden; gland (small & sessile) present on petiole and often also rachis"	"Acacia varia"
1933	"Heads cream to pale yellow; gland (small & sessile) present on rachis, normally absent from petiole"	"Acacia luteola"
1934	"Branchlet hairs to 1 mm long and ±uniform in length"	1935
1934	"Branchlet hairs 1.5–3 mm long but often intermixed with much shorter ones"	1938
1935	"Pinnules mostly 9–12 mm long, variably recurved, hairy; peduncles mostly c. 20 mm long; bracteoles with long spreading hairs (Mt Lesueur, W.A.)"	"Acacia plicata"
1935	"Characters not combined as above (S of Mt Lesueur, W.A.)"	1936
1936	"Pinnules flat, finely and densely hairy on both surfaces, grey-green, concolorous"	"Acacia grisea"
1936	"Pinnule characters not combined as above"	1937
1937	"Heads twinned on extremely reduced raceme axes, 1–3 racemes in each leaf axil (Esperance district, W.A.)"	"Acacia nigricans"
1937	"Heads not on racemes, 1 or 2 in each axil (near Perth to Albany, W.A.)"	"Acacia browniana"
1938	"Peduncles 5–15 mm long at anthesis; heads 12–21-flowered"	"Acacia browniana"
1938	"Peduncles 10–30 mm long at anthesis; heads 24–43-flowered"	1939
1939	"Gland (small & sessile) usually present on distal pinnae at base of uppermost 1–4 pairs of pinnules; distal pinnae 10–30 mm long with 3–10 pairs of glabrous pinnules"	"Acacia empelioclada"
1939	"Gland absent from distal pinnae; distal pinnae 6–20 mm long with 2–6 pairs of normally sparsely hairy pinnules"	"Acacia lateriticola"