1	"Hypanthium up to 6 mm long"	2
1	"Hypanthium more than 6 mm long"	39
2	"Hypanthium glabrous"	3
2	"Hypanthium pubescent"	23
3	"Leaf blade glabrous (sometimes puberulent in C. arborescens and C. exstipulata)"	4
3	"Leaf blade pubescent"	19
4	"Calyx segments up to 3 mm long"	5
4	"Calyx segments more than 3 mm long"	13
5	"Stipules present"	6
5	"Stipules absent"	9
6	"Terminal buds with bud scales"	7
6	"Terminal buds without bud scales"	8
7	"Branchlets glabrous"	"Calytrix glaberrima"
7	"Branchlets pubescent"	"Calytrix alpestris"
8	"Hypanthium 3- to 4-ribbed"	"Calytrix paucicostata"
8	"Hypanthium 5- to 10-ribbed"	"Calytrix acutifolia"
9	"Hypanthium articulated"	"Calytrix harvestiana"
9	"Hypanthium not articulated"	10
10	"Calyx segments shortly mucronate"	"Calytrix platycheiridia"
10	"Calyx segments not mucronate"	11
11	"Hypanthium narrowly obconical, 5 mm long"	"Calytrix purpurea"
11	"Hypanthium subfusiform to subcylindrical, 2.5-3.5 mm long"	12
12	"Branchlets glabrous, calyx segments 0.2-0.25 mm long"	"Calytrix sylvana"
12	"Branchlets pubescent to puberulent, calyx segments 0.3-2 mm long"	"Calytrix acutifolia"
13	"Terminal buds with bud scales"	14
13	"Terminal buds without bud scales"	15
14	"Calyx segments usually awnless (rarely acuminate to awned and then to 4.5 mm long)"	"Calytrix alpestris"
14	"Calyx segments awned, up to 19.5 mm long (rarely acuminate or apiculate and then c. 1-2.5 mm long)"	"Calytrix tetragona"
15	"Hypanthium free from the style"	16
15	"Hypanthium adnate to the style"	18
16	"Leaves peltate"	"Calytrix arborescens"
16	"Leaves not. peltate"	17
17	"Leaf blade 2-17 mm long, petals ovate to lanceolate"	"Calytrix depressa"
17	"Leaf blade 1-2(-4.5) mm long, petals narrowly elliptic to sublinear"	"Calytrix exstipulata"
18	"Hypanthium 5- to 10-ribbed, leaf blade angular-obovate in transverse section ."	"Calytrix asperula"
18	"Hypanthium 10-ribbed, leaf blade broadly obovate to suborbicular in transverse section"	"Calytrix habrantha"
19	"Calyx segments awned (occasionally acuminate or mucronate)"	20
19	"Calyx segments not awned (rarely acuminate or shortly awned)"	21
20	"Style inserted on the conical ovary apex"	"Calytrix faucicola"
20	"Style inserted in a cup or tube formed by the hypanthium, not inserted on the ovary apex"	"Calytrix tetragona"
21	"Stamens 2- to several-seriate"	"Calytrix acutifolia"
21	"Stamens 1-seriate"	22
22	"Calyx segments 0.2-0.3 mm long, the apex truncate to rounded; petals ovate to elliptic, 3.5-4 mm long"	"Calytrix smeatoniana"
22	"Calyx segments more than 0.5 mm long, the apex acute to rounded (rarely acuminate or shortly awned); petals elliptic, 4-5.75 mm long"	"Calytrix alpestris"
23	"Leaves decussate or verticillate"	24
23	"Leaves alternate (sometimes in part subopposite)"	26
24	"Leaves verticillate"	"Calytrix verticillata"
24	"Leaves decussate"	25
25	"Stipules present, blade of calyx segments pubescent for at least of its length"	"Calytrix parvivallis"
25	"Stipules absent, blade of calyx segments pubescent for c. '14 of its length"	"Calytrix nematoclada"
26	"Calyx glabrous"	27
26	"Calyx pubescent"	33
27	"Stamens 1-seriate"	28
27	"Stamens 2- to several-seriate"	30
28	"Calyx segments awned (occasionally acuminate or mucronate)"	"Calytrix tetragona"
28	"Calyx segments not awned"	29
29	"Calyx segments 0.2-0.3 mm long, the apex truncate to rounded; petals ovate to elliptic, 3.5-4 mm long"	"Calytrix smeatoniana"
29	"Calyx segments more than 0.5 mm long, the apex acute to rounded (rarely acuminate or shortly awned); petals elliptic, 4-5.75 mm long"	"Calytrix alpestris"
30	"Calyx segments not awned or mucronate"	"Calytrix acutifolia"
30	"Calyx segments awned or mucronate"	31
31	"Hypanthium narrowly obconical, calyx segments mucronate"	"Calytrix merrelliana"
31	"Hypanthium +/- cylindrical above the fusiform ovarian region, calyx segments awned"	32
32	"Flowers usually clustered, calyx awns distinctly curled and twisted in bud"	"Calytrix sapphirina"
32	"Flowers always scattered, calyx awns straight to sinuous in bud"	"Calytrix simplex subsp. suboppositifolia"
33	"Hypanthium hairs distinctly longer on the ovarian region than on the region above"	34
33	"Hypanthium hairs not longer on the ovarian region than on the region above, or hypanthium with hairs on the ovarian region only Brunonia, Vol. 10, No. 1 (1987) 23"	36
34	"Short secondary branchlets produced at nearly every node of the primary axes and persisting for one to several seasons (calyx lobes 1.5-3 mm long; petals 2-5 mm long, the apex obtuse; leaf blade 0.8-2.5 mm long)"	"Calytrix achaeta"
34	"Short secondary branchlets produced sparingly"	35
35	"Calyx lobes 2.5-5 mm long; petals 3-4.75 mm long, the apex acute to narrowly acute; leaf blade 2-1 1 mm long"	"Calytrix brownii"
35	"Calyx lobes 1.75-2.25 mm long; petals 1.8-2.5 mm long, the apex rounded to obtuse; leaf blade 2.5-3(-4.5) mm long"	"Calytrix rupestris"
36	"Calyx segments not awned or acuminate"	"Calytrix violacea"
36	"Calyx segments awned or at least acuminate"	37
37	"Hypanthium free from the style"	"Calytrix strigosa"
37	"Hypanthium adnate to the style"	38
38	"Leaf blade in transverse section orbicular to suborbicular"	"Calytrix plumulosa"
38	"Leaf blade in transverse section shallowly lunate"	"Calytrix simplex subsp. suboppositifolia"
39	"Hypanthium glabrous"	40
39	"Hypanthium pubescent (sometimes only towards the base)"	100
40	"Hypanthium free, or partly free, from the style"	41
40	"Hypanthium completely adnate to the style"	78
41	"Stamens 1-seriate (in occasional flowers partly 2-seriate)"	42
41	"Stamens 2-to several-seriate (in occasional flowers partly 1-seriate)"	52
42	"Terminal buds with bud scales (occasionally some buds naked)"	43
42	"Terminal buds without bud scales"	47
43	"Leaf blade in transverse section broadly obtriangular to depressed angular-obovate, sometimes partly shallowly lunate"	44
43	"Leaf blade in transverse section suborbicular, broadly to depressed obovate, elliptic or transversely elliptic"	45
44	"Hypanthium usually constricted below the base of the style, the free region 0.5-45 mm long"	"Calytrix tetragona"
44	"Hypanthium not constricted below the base of the style, the free region 4-7.5 mm long"	"Calytrix involucrata"
45	"Petals with an erose to suberose margin, thecae suborbicular"	"Calytrix erosipetala"
45	"Petals with an entire margin, thecae oblong to suboblong"	46
46	"Hypanthium strongly constricted below the base of the style"	"Calytrix warburtonensis"
46	"Hypanthium not constricted below the base of the style"	"Calytrix gypsophila"
47	"Hypanthium 5-ribbed"	"Calytrix glutinosa"
47	"Hypanthium 10-ribbed"	48
48	"Leaves decussate"	"Calytrix praecipua"
48	"Leaves alternate"	49
49	"Stipules prominent, up to 1 mm long, usually 2-paired in leaves subtending flowers"	"Calytrix duplistipulata"
49	"Stipules not prominent, less than 0.75 mm long, usually 1-paired (sometimes 2-paired in floral leaves)"	50
50	"Apex of bracteole obtuse to subtruncate, often apiculate"	"Calytrix fraseri"
50	"Apex of bracteole or cheiridium lobe acuminate to long acuminate"	51
51	"Anther connective very prominent, hooded-conical, restricting anther movement; branchlets smooth"	"Calytrix decandra"
51	"Anther connective prominent but apparently not restricting anther movement; branchlets minutely verrucose"	"Calytrix verruculosa"
52	"Leaves decussate"	"Calytrix decussata"
52	"Leaves alternate"	53
53	"Stipules present"	54
53	"Stipules absent"	69
54	"Enations in axils of floral leaves turgid"	55
54	"Enations in axils of floral leaves not turgid"	56
55	"Cheiridium lobes c. 'h the length of the cheiridium"	"Calytrix brevifolia"
55	"Cheiridium lobes c. 'h the length of the cheiridium"	"Calytrix truncatifolia"
56	"Hypanthium at the ovary trigonous to subtrigonous"	57
56	"Hypanthium at the ovary k orbicular in transverse section (never trigonous)"	58
57	"Bracteole apex obtuse to subtruncate, often apiculate"	"Calytrix fraseri"
57	"Bracteole apex acuminate"	"Calytrix mimiana"
58	"Leaf margin ciliate"	59
58	"Leaf margin entire (i.e. not ciliate)"	62
59	"Hypanthium apex with minute hair-like enations adjacent to each petal"	"Calytrix microcoma"
59	"Hypanthium apex without enations"	60
60	"Leaves subtending flowers with a wider scarious margin than foliage leaves"	"Calytrix islensis"
60	"Leaves subtending flowers similar to foliage leaves"	61
61	"Leaf blade incurved to straight, the apex obtuse to acute, 1.5-4mm long; bracteoles strongly keeled; petals pink to pinkish-purple for the greater part"	"Calytrix carinata"
61	"Leaf blade recurved to straight, the apex sub-truncate to rounded, 1.25-5.5 mm long; bracteoles subkeeled; petals pink to mauve for the greater part"	"Calytrix longiflora"
61	"Leaf blade straight (sometimes slightly incurved or recurved), the apex acute, 4-1 1 mm long; bracteoles keeled to subkeeled; petals yellowish-cream"	"Calytrix gurulmundensis"
62	"Stipules prominent, up to 1.25 mm long, 2-paired in leaves subtending flowers"	"Calytrix similis"
62	"Stipules not prominent, less than 0.5 mm long, usually 1-paired (sometimes 2-paired in floral leaves)"	63
63	"Leaf blade suborbicular in transverse section (rarely partly angular)"	64
63	"Leaf blade angular in transverse section"	66
64	"Hypanthium 13-17 mm long, the free region 7-8 mm long"	"Calytrix creswellii"
64	"Hypanthium 8-12 mm long, the free region up to 5 mm long"	65
65	"Petals ovate; free region of the hypanthium up to 2.5 mm long, tightly surrounding the style"	"Calytrix birdii"
65	"Petals lanceolate to elliptic; free region of the hypanthium 3.5-5 mm long, not tightly surrounding the style"	"Calytrix desolata"
66	"Leaves peltate"	"Calytrix arborescens"
66	"Leaves not peltate"	67
67	"Leaf blade lunate to broadly obtriangular in transverse section"	"Calytrix megaphylla"
67	"Leaf blade angular-obovate to depressed angular-obovate in transverse section"	68
68	"Hypanthium usually 5- but occasionally to 10-ribbed; bracteoles not keeled"	"Calytrix leptophylla"
68	"Hypanthium 10-ribbed; bracteoles keeled to subkeeled"	"Calytrix gurulmundensis"
69	"Free region of the hypanthium tightly surrounding the style"	70
69	"Free region of the hypanthium not tightly surrounding the style"	72
70	"Leaf blade shallowly lunate to lunate in transverse section"	"Calytrix eneabbensis"
70	"Leaf blade broadly obtriangular to angular-obovate in transverse section"	71
71	"Hypanthium 10-ribbed"	"Calytrix oldfieldii"
71	"Hypanthium 5-ribbed"	"Calytrix divergens"
72	"Hypanthium 5- to 9-ribbed"	73
72	"Hypanthium 10-ribbed"	74
73	"Petals lanceolate to elliptic, 3.75-5.5 wide; cheiridium 9-17 mm long"	"Calytrix glutinosa"
73	"Petals narrowly elliptic to sublinear, 1.75-2.5 mm wide; cheiridium 4-9.5 mm long"	"Calytrix exstipulata"
74	"Free region of the hypanthium up to 6 mm long"	75
74	"Free region of the hypanthium more than 6 mm long"	77
75	"Leaf blade 0.5-2 mm long; petals narrowly elliptic to sublinear, 1.75-2.5 mm wide"	"Calytrix exstipulata"
75	"Leaf blade 2-17 mm long; petals ovate, lanceolate or narrowly elliptic, 2-4.25 mm wide"	76
76	"Cheiridium compressed, the lobes c. 1/2-3% of its length"	"Calytrix depressa"
76	"Cheiridium not compressed, the lobes c. 1% of its length"	"Calytrix angulata"
77	"Leaf blade 4-7 mm long"	"Calytrix micrairoides"
77	"Leaf blade 0.5-2 mm long"	"Calytrix exstipulata"
78	"Stipules absent"	79
78	"Stipules present"	83
79	"Hypanthium 5-ribbed"	"Calytrix divergens"
79	"Hypanthium 8- to 10-ribbed"	80
80	"Hypanthium trigonous"	"Calytrix drummondii"
80	"Hypanthium orbicular in transverse section"	81
81	"Cheiridium laterally shallowly grooved"	"Calytrix tenuiramea"
81	"Cheiridium laterally at least rounded, often ridged to subkeeled"	82
82	"Cheiridium usually compressed; petals elliptic to ovate, 7.5-9 rnm long; some anthers sterile"	"Calytrix oldfieldii"
82	"Cheiridium not compressed; petals lanceolate to elliptic, 4.5-7.5 mm long; all anthers fertile"	"Calytrix leschenaultii"
83	"Enations in axils of floral leaves turgid"	84
83	"Enations in axils of floral leaves not turgid"	85
84	"Cheiridium lobes c. '3 the length of the cheiridium"	"Calytrix brevifolia"
84	"Cheiridium lobes c. '12 the length of the cheiridium"	"Calytrix truncatifolia"
85	"Hypanthium trigonous, at least in the ovarian region"	86
85	"Hypanthium not trigonous (+ orbicular in transverse section)"	89
86	"Leaf blade lunate to broadly lunate in transverse section; bracteoles 9-1 1 mm long"	"Calytrix aurea"
86	"Leaf blade angular-obovate to broadly angular-obovate in transverse section, rarely partly shallowly lunate; bracteoles 2-9 mm long"	87
87	"Bracteoles rarely slightly turgid, the apex with a long flexuous acumen"	"Calytrix flavescens"
87	"Bracteoles turgid towards the apex, the apex obtuse, apiculate or acuminate, incurved to slightly recurved"	88
88	"Hypanthium 5- to 10-ribbed, anther connective not prominent"	"Calytrix asperula"
88	"Hypanthium 10- to 12-ribbed, anther connective prominent (often globular with a patelliform apex)"	"Calytrix chrysantha"
89	"Branchlets pubescent, hypanthium 3- or 4-ribbed"	"Calytrix paucicostata"
89	"Branchlets glabrous, hypanthium 10-ribbed"	90
90	"Filaments turgid just above the middle, petals 16-19 mm long"	"Calytrix superba"
90	"Filaments acicular, petals less than 15 mm long"	91
91	"Leaf blade broadly obovate to suborbicular in transverse section"	92
91	"Leaf blade 2 angular in transverse section"	95
92	"Anthers all fertile"	93
92	"Anthers sterile, or much reduced, in inner stamens"	94
93	"Petals broadly elliptic, 6-7.5 mm long, 4-45 mm wide; cheiridium 6.5-9.5 mm long"	"Calytrix gracilis"
93	"Petals lanceolate to elliptic, 5-6 mm long, 2-3.25 mm wide; peduncle and bracteoles together less than 4 mm long"	"Calytrix habrantha"
94	"Petals 4.5-7 mm long, the apex obtuse; cheiridium with one lobe often shorter than the other"	"Calytrix breviseta subsp. stipulosa"
94	"Petals 7-9.5 mm long, the apex acute to acuminate; cheiridium lobes + equal in length"	"Calytrix amethystina"
95	"Hypanthium subobovoid in the ovarian region (leaf blades usually less than 2 mm long)"	"Calytrix formosa"
95	"Hypanthium fusiform to subfusiform in the ovarian region (leaf blades mostly more than 2 mm long)"	96
96	"Leaves of flowering growth increments dissimilar to those of vegetative increments (blade often ovate and/or shorter)"	"Calytrix variabilis"
96	"Leaves of flowering growth increments similar to those of vegetative increments"	97
97	"Apex of cheiridium lobes rounded and mucronate, or acuminate, or truncate and apiculate; cheiridium with or without a slight ridge laterally, not grooved"	98
97	"Apex of cheiridium lobes acuminate to long acuminate; cheiridium shallowly grooved laterally"	99
98	"Leaf blade linear, linear-lanceolate, or narrowly elliptic, 2-9 mm long; petals 7.25-10mm long"	"Calytrix breviseta subsp. breviseta"
98	"Leaf blade ovate, elliptic, or sometimes oblong to linear, 1.5-5.5 mm long; petals 4.5-7 mm long"	"Calytrix breviseta subsp. stipulosa"
99	"Leaves closely spaced; cheiridium lobes 4-7 mm long; petals 2.8-4 mm wide, the apex acute"	"Calytrix pulchella"
99	"Leaves widely spaced; cheiridium lobes 2-4 mm long; petals 2-2.5 mm wide, the apex obtuse to acute"	"Calytrix tenuiramea"
100	"Hypanthium free, or partly free, from the style"	101
100	"Hypanthium completely adnate to the style"	104
101	"Calyx pubescent"	"Calytrix strigosa"
101	"Calyx glabrous"	102
102	"Stipules in foliage leaves prominent, to 3 mm long; flowers scattered (stamens usually 2-seriate)"	"Calytrix surdiviperana"
102	"Stipules in foliage leaves not prominent, to 1.5 mm long, or stipules absent; flowers usually clustered"	103
103	"Stamens 1-seriate"	"Calytrix tetragona"
103	"Stamens usually 3-seriate"	"Calytrix sapphirina"
104	"Calyx glabrous"	105
104	"Calyx pubescent"	107
105	"Flowers usually clustered; unexpanded flowering shoots usually subtended by modified leaves, rarely by scale-like bracts"	"Calytrix sapphirina"
105	"Flowers scattered; unexpanded flowering shoots subtended by normal foliage leaves"	106
106	"Leaf blade 4-10 mm long, petals broadly lanceolate"	"Calytrix simplex subsp. simplex"
106	"Leaf blade 1.5-6 mm long, petals elliptic"	"Calytrix simplex subsp. suboppositifolia"
107	"Leaf blade +/- orbicular in transverse section"	"Calytrix plumulosa"
107	"Leaf blade shallowly lunate in transverse section"	"Calytrix simplex subsp. suboppositifolia"