1	"Fruit dehiscent"	2
1	"Fruit indehiscent; cotyledons in seed considerably wider than hypocotyl"	60
2	"Staminodes 5, adnate to petals; stamens 5, antisepalous; shrubs; flowers 5-merous; petals to 5 mm long"	"Coleonema {Coleonema pulchellum}"
2	"Staminodes absent, rarely present and then antisepalous (Drummondita) or antipetalous (Flindersia) and free; stamens 3, 4, 5, 8 or 10 (–25); herbs to large trees; flowers 3, 4 or 5(+)-merous; petals to 30 mm long"	3
3	"Cotyledons in seed considerably wider than hypocotyl; mostly comparatively large-leaved shrubs or trees of rain forest, if non rain forest then flowers 5-merous with 5 stamens (Geijera, Flindersia) and staminodes, if present, antipetalous"	4
3	"Cotyledons in seed linear, c. same width as hypocotyl; mostly small-leaved shrubs of sclerophyllous vegetation; if 5-merous then with 10 stamens, or rarely with 5 stamens and 5 antisepalous staminodes"	42
4	"Flowering material available"	5
4	"Fruiting material available"	23
5	"Petals usually 5"	6
5	"Petals less than 5"	12
6	"Stamens usually 5"	7
6	"Stamens 10"	9
7	"Petals valvate, usually hooked adaxially at apex"	Geijera
7	"Petals imbricate or narrowly so, not hooked adaxially at apex"	8
8	"Flowers mostly bisexual or male; stamens alternating with 5 staminodes, these similar to filaments of functional stamens or reduced to ligules or rarely lacking; functional gynoecium a 5-loculed syncarpous pistil with 2–6 ovules per locule; leaves alternate to opposite, impari- or paripinnate, trifoliolate, or simple; trichomes simple to stellate or scale-like"	Flindersia
8	"Flowers bisexual; stamens not alternating with staminodes; gynoecium a 5-carpelled subapocarpous pistil with 2 ovules per locule; leaves alternate, simple; trichomes simple"	"Coatesia {Coatesia paniculata}"
9	"Leaves opposite"	10
9	"Leaves alternate"	11
10	"Buds with 2 pairs of opposite, imbricate scales enclosing leaf or floral primordia; carpels in ovary without prominent glands; ovules 4–6 per locule"	Bosistoa
10	"Buds naked; carpels in ovary each with prominent gland; ovules 2 per locule"	Acradenia
11	"Leaves imparipinnate"	"Pentaceras {Pentaceras australe}"
11	"Leaves simple"	"Halfordia {Halfordia kendack}"
12	"Flowers in small capitate clusters; petals 3"	"Lunasia {Lunasia amara var. amara}"
12	"Flowers comparatively lax; petals 4"	13
13	"Leaves alternate, mostly pinnate or trifoliolate; plants dioecious, usually armed; stamens 4"	Zanthoxylum
13	"Leaves opposite or whorled (or rarely subopposite or alternate in Dinosperma and Medicosma), compound or simple; plants monoclinous or dioecious, unarmed; stamens 8 or 4"	14
14	"Inflorescences terminal or terminal and axillary; stamens 8"	15
14	"Inflorescences axillary and/or infrafoliar; stamens 8 or 4"	16
15	"Leaves with pocket-domatia in axils of secondary veins; ovules 6–8 per locule"	"Bouchardatia {Bouchardatia neurococca}"
15	"Leaves without domatia; ovules 2 per locule"	Dinosperma
16	"Stamens 4"	17
16	"Stamens 8"	19
17	"Inflorescences compoundly or simply racemose"	Euodia
17	"Inflorescences paniculate"	18
18	"Carpels in ovary joined in apical style, otherwise contiguous"	Melicope
18	"Carpels in ovary joined in apical or subapical style, otherwise connate at base or to full length"	"Pitaviaster {Pitaviaster haplophyllus}"
19	"Trichomes mostly fasciculate, stellate, or scalelike; at least the antisepalous staminal filaments usually with raised glands towards apex"	Medicosma
19	"Trichomes simple; staminal filaments eglandular"	20
20	"Petals valvate, narrowly elliptic, lanceolate, or linear, usually becoming recurved or reflexed"	Acronychia
20	"Petals valvate or narrowly imbricate, ovate-elliptic or elliptic, erect or ascending"	21
21	"Gynoecium syncarpous"	"Sarcomelicope {Sarcomelicope simplicifolia}"
21	"Gynoecium subapocarpous"	22
22	"Leaves simple; staminal filaments flattened and ±petaloid, elliptic or narrowly so or orbicular to obovate or spathulate"	Brombya
22	"Leaves trifoliolate and/or simple; staminal filaments sublinear, gradually tapering from base to subulate apex"	Melicope
23	"Fruit indehiscent (in herbarium specimens of some species of Acronychia occasional or rather frequent fruiting carpels may open into the locule)"	24
23	"Fruit dehiscent (often tardily so in Geijera)"	30
24	"Leaves alternate"	25
24	"Leaves opposite (or rarely whorled in Sarcomelicope); fruit drupaceous"	26
25	"Leaves imparipinnate; fruit of 1–5 distinct samaras"	"Pentaceras {Pentaceras australe}"
25	"Leaves simple; fruit syncarpous, drupaceous, 3–5-loculed"	"Halfordia {Halfordia kendack}"
26	"Leaves trifoliolate or mostly so"	Acronychia
26	"Leaves simple or mostly so"	27
27	"Fruit 1-loculed"	"Pitaviaster {Pitaviaster haplophyllus}"
27	"Fruit 4-loculed (4–8-loculed in Acronychia wilcoxiana)"	28
28	"Fruit with septicidal fissures at least at apex"	Acronychia
28	"Fruit without septicidal fissures (or rarely with apical septicidal fissures in Sarcomelicope {Sarcomelicope simplicifolia})"	29
29	"Petals and staminal filaments deciduous in fruit"	Acronychia
29	"Petals and filaments of staminodes, or at least proximal portion of antisepalous staminodal filaments (usually ±concealed by persistent sepals), persistent in fruit"	"Sarcomelicope {Sarcomelicope simplicifolia}"
30	"Testa membranaceous (or coriaceous or subcoriaceous in Dinosperma)"	31
30	"Testa with sclerotesta"	36
31	"Fruit an ellipsoid, 5-loculed septicidal capsule that separates (or is easily separable) into 5 distinct valves at maturity; seeds winged"	Flindersia
31	"Fruit of 1–5 basally connate follicles; seeds not winged"	32
32	"Trichomes mostly fasciculate, stellate, or scale-like; leaves alternate, simple"	"Lunasia {Lunasia amara var. amara}"
32	"Trichomes simple; leaves opposite or whorled (or rarely subopposite or alternate in Dinosperma), compound or simple"	33
33	"Cotyledons in seed flattened, convolute and folded"	Dinosperma
33	"Cotyledons in seed plano-convex, neither convolute nor folded"	34
34	"Leaves with pocket-domatia in axils of secondary veins"	"Bouchardatia {Bouchardatia neurococca}"
34	"Leaves without domatia"	35
35	"Buds with 2 pairs of opposite, imbricate scales enclosing leaf or floral primordia; fruit of 1 or 2 or rarely 3 follicles 8–30 mm long; leaves mostly imparipinnate, trifoliolate, or simple"	Bosistoa
35	"Buds naked; fruit of 1–5 follicles 6–8 mm long; leaves trifoliolate"	Acradenia
36	"Leaves alternate; fruit of 1–5 basally connate follicles"	37
36	"Leaves opposite or whorled (or rarely subopposite or alternate in Medicosma); fruit of 1–4 basally connate follicles (or carpels united into a 4-loculed septicidal capsule in Melicope)"	39
37	"Seeds usually expelled from dehisced fruit; testa thin and brittle, dull to lustrous; leaves simple"	"Coatesia {Coatesia paniculata}"
37	"Seeds usually persistent in dehisced fruit; testa with thick sclerotesta, sarcotesta, and shiny black or reddish pellicle; leaves compound or simple"	38
38	"Leaves compound or mostly so; plants usually armed"	Zanthoxylum
38	"Leaves simple; plants unarmed"	Geijera
39	"Seeds usually persistent in dehisced fruit (but see description of M. broadbentiana); testa with thick sclerotesta, sarcotesta, and shiny black pellicle"	Melicope
39	"Seeds usually expelled from dehisced fruit; testa thin and brittle, dull to lustrous, with neither sarcotesta nor shiny black pellicle"	40
40	"Sepals adaxially pubescent or sparsely so; follicles 4.5–6 mm long, usually with short stylar beak; trichomes simple"	Euodia
40	"Sepals adaxially glabrous; follicles 4–10 mm long, usually without stylar beak; trichomes simple or compound"	41
41	"Infructescences 2.5–17 cm long; leaves simple; petals (deciduous or subpersistent in fruit) 1.5–4 mm long; trichomes simple; follicles 4–8 mm long"	Brombya
41	"Infructescences shorter than above, or, if as long, then leaves compound or petals (which are persistent or subpersistent in fruit) at least 7 mm long; trichomes simple to stellate or scale-like; follicles 4–10 mm long"	Medicosma
42	"Leaves opposite, simple or pinnate or bipinnate; flowers 4 (5)-merous"	43
42	"Leaves alternate, simple; flowers usually 5-merous, rarely 4- or 6–8-merous"	46
43	"Leaves simple; calyx hemispherical, sometimes lobed; petals connate and forming a tube or lately separating and then often still connate at base and stamens spreading"	Correa
43	"Leaves simple or pinnate or bipinnate; sepals distinct; petals distinct, usually spreading, sometimes urceolate; stamens erect or inwardly curved"	44
44	"Stamens 8 (rarely 4 caducous); leaves simple or pinnate or bipinnate"	Boronia
44	"Stamens 4; leaves simple or ternate"	45
45	"Disc distinctly 4-lobed; leaves simple or ternate"	Zieria
45	"Disc entire; leaves simple"	"Neobyrnesia {Neobyrnesia suberosa}"
46	"Leaves lepidote on abaxial surface, sometimes also so on branches, perianth, stamens and ovary"	47
46	"Leaves and stems glabrous or variously hairy but not lepidote (rarely, Asterolasia, Eriostemon) stellate-lepidote on petals"	51
47	"Flowers sessile, in dense or compact heads or rarely solitary"	48
47	"Flowers pedicellate, in an open inflorescence or solitary"	49
48	"Carpels 5"	Phebalium
48	"Carpels 2–4"	Microcybe
49	"Inflorescences umbellate or rarely flowers solitary; anthers basifixed, with a prominent apical gland"	Phebalium
49	"Inflorescences cymose or solitary; anthers versatile, without an apical gland"	50
50	"Sepals distinct; anthers retuse at apex"	Nematolepis
50	"Sepals connate; anthers obtusely apiculate"	Rhadinothamnus
51	"Leaf margin deeply sinuate or lobed"	"Chorilaena {Chorilaena quercifolia}"
51	"Leaf margin entire"	52
52	"Inflorescence heads surrounded by large imbricate involucral bracts in 3 or 4 rows"	Diplolaena
52	"Inflorescence not surrounded by large involucral bracts"	53
53	"Corolla cylindrical"	54
53	"Corolla spreading"	55
54	"Stamens 5, alternating with 5 staminodes, densely hairy on abaxial surface"	Drummondita
54	"Stamens 10, all fertile, pilose at swollen base"	"Muiriantha {Muiriantha hassellii}"
55	"Sepals larger than petals, coloured and similar to inflorescence bracts"	Geleznowia
55	"Sepals much smaller than petals, not showy"	56
56	"Staminal filaments glabrous, divergent"	57
56	"Staminal filaments variously hairy, rarely glabrous, erect or pyramidally arranged"	58
57	"Sepals minute or 0; carpels 1–5"	Asterolasia
57	"Sepals obvious; carpels 5"	Leionema
58	"Petals 5-veined, stellate-lepidote; staminal filaments subapically verrucose"	Eriostemon
58	"Petals 1-veined, glabrous or with simple hairs; staminal filaments smooth"	59
59	"Anther and apiculum pilose"	Crowea
59	"Anther and apiculum glabrous"	Philotheca
60	"Fruit of 1–5 samaras or drupaceous; endocarp cartilaginous or thinly so or woody; seeds with copious endosperm (except in Pentaceras), where tissue is scant); leaves opposite or alternate"	61
60	"Fruit baccate, endocarp membranaceous or fleshy; seeds without endosperm; leaves alternate"	99
61	"Flowering material available"	62
61	"Fruiting material available"	80
62	"Petals usually 5"	63
62	"Petals less than 5"	69
63	"Stamens usually 5"	64
63	"Stamens 10"	66
64	"Petals valvate, usually hooked adaxially at apex"	Geijera
64	"Petals imbricate or narrowly so, not hooked adaxially at apex"	65
65	"Flowers mostly bisexual or male; stamens alternating with 5 staminodes, these similar to filaments of functional stamens or reduced to ligules or rarely lacking; functional gynoecium a 5-loculed syncarpous pistil with 2–6 ovules per locule; leaves alternate to opposite, impari- or paripinnate, trifoliolate, or simple; trichomes simple to stellate or scale-like"	Flindersia
65	"Flowers bisexual; stamens not alternating with staminodes; gynoecium a 5-carpelled subapocarpous pistil with 2 ovules per locule; leaves alternate, simple; trichomes simple"	"Coatesia {Coatesia paniculata}"
66	"Leaves opposite"	67
66	"Leaves alternate"	68
67	"Buds with 2 pairs of opposite, imbricate scales enclosing leaf or floral primordia; carpels in ovary without prominent glands; ovules 4–6 per locule"	Bosistoa
67	"Buds naked; carpels in ovary each with prominent gland; ovules 2 per locule"	Acradenia
68	"Leaves imparipinnate"	"Pentaceras {Pentaceras australe}"
68	"Leaves simple"	"Halfordia {Halfordia kendack}"
69	"Flowers in small capitate clusters; petals 3"	"Lunasia {Lunasia amara var. amara}"
69	"Flowers comparatively lax; petals 4"	70
70	"Leaves alternate, mostly pinnate or trifoliolate; plants dioecious, usually armed; stamens 4"	Zanthoxylum
70	"Leaves opposite or whorled (or rarely subopposite or alternate in Dinosperma and Medicosma), compound or simple; plants monoclinous or dioecious, unarmed; stamens 8 or 4"	71
71	"Inflorescences terminal or terminal and axillary; stamens 8"	72
71	"Inflorescences axillary and/or infrafoliar; stamens 8 or 4"	73
72	"Leaves with pocket-domatia in axils of secondary veins; ovules 6–8 per locule"	"Bouchardatia {Bouchardatia neurococca}"
72	"Leaves without domatia; ovules 2 per locule"	Dinosperma
73	"Stamens 4"	74
73	"Stamens 8"	76
74	"Inflorescences compoundly or simply racemose"	Euodia
74	"Inflorescences paniculate"	75
75	"Carpels in ovary joined in apical style, otherwise contiguous"	Melicope
75	"Carpels in ovary joined in apical or subapical style, otherwise connate at base or to full length"	"Pitaviaster {Pitaviaster haplophyllus}"
76	"Trichomes mostly fasciculate, stellate, or scalelike; at least the antisepalous staminal filaments usually with raised glands towards apex"	Medicosma
76	"Trichomes simple; staminal filaments eglandular"	77
77	"Petals valvate, narrowly elliptic, lanceolate, or linear, usually becoming recurved or reflexed"	Acronychia
77	"Petals valvate or narrowly imbricate, ovate-elliptic or elliptic, erect or ascending"	78
78	"Gynoecium syncarpous"	"Sarcomelicope {Sarcomelicope simplicifolia}"
78	"Gynoecium subapocarpous"	79
79	"Leaves simple; staminal filaments flattened and ±petaloid, elliptic or narrowly so or orbicular to obovate or spathulate"	Brombya
79	"Leaves trifoliolate and/or simple; staminal filaments sublinear, gradually tapering from base to subulate apex"	Melicope
80	"Fruit indehiscent (in herbarium specimens of some species of Acronychia occasional or rather frequent fruiting carpels may open into the locule)"	81
80	"Fruit dehiscent (often tardily so in Geijera)"	87
81	"Leaves alternate"	82
81	"Leaves opposite (or rarely whorled in Sarcomelicope); fruit drupaceous"	83
82	"Leaves imparipinnate; fruit of 1–5 distinct samaras"	"Pentaceras {Pentaceras australe}"
82	"Leaves simple; fruit syncarpous, drupaceous, 3–5-loculed"	"Halfordia {Halfordia kendack}"
83	"Leaves trifoliolate or mostly so"	Acronychia
83	"Leaves simple or mostly so"	84
84	"Fruit 1-loculed"	"Pitaviaster {Pitaviaster haplophyllus}"
84	"Fruit 4-loculed (4–8-loculed in Acronychia wilcoxiana)"	85
85	"Fruit with septicidal fissures at least at apex"	Acronychia
85	"Fruit without septicidal fissures (or rarely with apical septicidal fissures in Sarcomelicope {Sarcomelicope simplicifolia})"	86
86	"Petals and staminal filaments deciduous in fruit"	Acronychia
86	"Petals and filaments of staminodes, or at least proximal portion of antisepalous staminodal filaments (usually ±concealed by persistent sepals), persistent in fruit"	"Sarcomelicope {Sarcomelicope simplicifolia}"
87	"Testa membranaceous (or coriaceous or subcoriaceous in Dinosperma)"	88
87	"Testa with sclerotesta"	93
88	"Fruit an ellipsoid, 5-loculed septicidal capsule that separates (or is easily separable) into 5 distinct valves at maturity; seeds winged"	Flindersia
88	"Fruit of 1–5 basally connate follicles; seeds not winged"	89
89	"Trichomes mostly fasciculate, stellate, or scale-like; leaves alternate, simple"	"Lunasia {Lunasia amara var. amara}"
89	"Trichomes simple; leaves opposite or whorled (or rarely subopposite or alternate in Dinosperma), compound or simple"	90
90	"Cotyledons in seed flattened, convolute and folded"	Dinosperma
90	"Cotyledons in seed plano-convex, neither convolute nor folded"	91
91	"Leaves with pocket-domatia in axils of secondary veins"	"Bouchardatia {Bouchardatia neurococca}"
91	"Leaves without domatia"	92
92	"Buds with 2 pairs of opposite, imbricate scales enclosing leaf or floral primordia; fruit of 1 or 2 or rarely 3 follicles 8–30 mm long; leaves mostly imparipinnate, trifoliolate, or simple"	Bosistoa
92	"Buds naked; fruit of 1–5 follicles 6–8 mm long; leaves trifoliolate"	Acradenia
93	"Leaves alternate; fruit of 1–5 basally connate follicles"	94
93	"Leaves opposite or whorled (or rarely subopposite or alternate in Medicosma); fruit of 1–4 basally connate follicles (or carpels united into a 4-loculed septicidal capsule in Melicope)"	96
94	"Seeds usually expelled from dehisced fruit; testa thin and brittle, dull to lustrous; leaves simple"	"Coatesia {Coatesia paniculata}"
94	"Seeds usually persistent in dehisced fruit; testa with thick sclerotesta, sarcotesta, and shiny black or reddish pellicle; leaves compound or simple"	95
95	"Leaves compound or mostly so; plants usually armed"	Zanthoxylum
95	"Leaves simple; plants unarmed"	Geijera
96	"Seeds usually persistent in dehisced fruit (but see description of M. broadbentiana); testa with thick sclerotesta, sarcotesta, and shiny black pellicle"	Melicope
96	"Seeds usually expelled from dehisced fruit; testa thin and brittle, dull to lustrous, with neither sarcotesta nor shiny black pellicle"	97
97	"Sepals adaxially pubescent or sparsely so; follicles 4.5–6 mm long, usually with short stylar beak; trichomes simple"	Euodia
97	"Sepals adaxially glabrous; follicles 4–10 mm long, usually without stylar beak; trichomes simple or compound"	98
98	"Infructescences 2.5–17 cm long; leaves simple; petals (deciduous or subpersistent in fruit) 1.5–4 mm long; trichomes simple; follicles 4–8 mm long"	Brombya
98	"Infructescences shorter than above, or, if as long, then leaves compound or petals (which are persistent or subpersistent in fruit) at least 7 mm long; trichomes simple to stellate or scale-like; follicles 4–10 mm long"	Medicosma
99	"Plants unarmed"	100
99	"Plants armed"	103
100	"Petals valvate"	"Micromelum {Micromelum minutum}"
100	"Petals imbricate"	101
101	"Young shoots densely brownish pubescent"	Glycosmis
101	"Young shoots not so"	102
102	"Flowers up to 6 mm long"	Clausena
102	"Flowers 13–18 mm long"	Murraya
103	Climber	"Luvunga {Luvunga monophylla}"
103	"Tree or shrub"	Citrus