1	"Species of the Kimberley region"	2
1	"Species NOT of the Kimberley region"	3
2	"Annual; roots fibrous; leaves flat to somewhat channelled; inflorescence unbranched; perianth segments 5.5–10 mm long excluding fringes"	"Thysanotus chinensis"
2	"Perennial; roots tuberous; leaves distally terete; inflorescence branched; perianth segments (17–)20–27 mm long excluding fringes"	"Thysanotus elatior"
3	"Stamens 3"	4
3	"Stamens 6"	9
4	"Fruiting pedicels nodding"	5
4	"Fruiting pedicels erect"	7
5	"Leaves not glaucous; scape erect"	"Thysanotus teretifolius"
5	"Leaves glaucous at least at base; scape spreading"	6
6	"Inflorescence usually simple or 2-branched; staminal filaments equal in length"	"Thysanotus glaucifolius"
6	"Inflorescence 2–5-branched; 1 staminal filament longer than the other two"	"Thysanotus glaucus"
7	"Umbels 2–4-flowered; anthers dehiscing by full-length slits"	"Thysanotus pauciflorus"
7	"Umbels 4–60-flowered; anthers dehiscing by terminal pores"	8
8	"Leaves glabrous"	"Thysanotus multiflorus"
8	"Leaves not glabrous"	"Thysanotus triandrus"
9	"Stamens arranged somewhat zygomorphically"	10
9	"Stamens arranged actinomorphically, evenly distributed around the flower and incurved toward the style"	51
10	"Anthers equal or subequal in length"	11
10	"Anthers distinctly 3 long, 3 short"	23
11	"Flowering stems annual, twining or prostrate; flowers occurring singly on branches; anthers dehiscing by slits"	"Thysanotus patersonii"
11	"Flowering stems perennial, not twining, erect or spreading, or absent; flowers usually 2 or more per umbel, often in paniculate inflorescence; anthers dehiscing by slits or terminal pores"	12
12	"Umbels borne on annual scapose inflorescence"	13
12	"Flowers solitary or in umbels borne on perennial stems"	20
13	"Inflorescence not paniculate, a single terminal umbel or cluster, sometimes with 1 or 2 subterminal umbels sessile or on a short branch"	14
13	"Inflorescence paniculate"	15
14	"Roots tuberous; anthers dehiscing by slits; pedicels of fruit nutant"	"Thysanotus isantherus"
14	"Roots not tuberous; anthers dehiscing by terminal pores; pedicels of fruit erect"	"Thysanotus unicupensis"
15	"Leaves usually 1 or 2, rarely up to 5, erect, channelled at base, becoming terete towards apex"	"Thysanotus thyrsoideus"
15	"Leaves 2 or more, erect to prostrate, linear to channelled"	16
16	"Inflorescence with few branches; leaves tuberculate-hairy"	17
16	"Inflorescence much-branched; leaves scabrous or glabrous"	18
17	"Leaves prostrate; inflorescence c. 4–5 cm long"	"Thysanotus speckii"
17	"Leaves erect; inflorescence 7–44 cm long"	"Thysanotus tenellus"
18	"Leaves scabrous; scape shortly hairy at base"	"Thysanotus scaber"
18	"Leaves and scape glabrous"	19
19	"Anthers 2.5–3 mm long; inflorescence branches stiff, patent"	"Thysanotus exiliflorus"
19	"Anthers 2.5–6 mm long; inflorescence branches ascending"	"Thysanotus rectantherus"
20	"Flowering stems 1–3 per plant, ridged; flowers solitary or in 4–6-flowered umbels"	21
20	"Flowering stems more than 3 per plant, ridged or smooth; umbels usually 1- or 2-flowered"	22
21	"Dichotomous branches few in upper part of mature plant; umbels 4–6-flowered"	"Thysanotus arbuscula"
21	"Dichotomous branches many from near base; flowers solitary"	"Thysanotus fastigiatus"
22	"Stems erect, ridged, intricately dichotomously branched; internodes c. 1 cm long"	"Thysanotus spiniger"
22	"Stems spreading, smooth, loosely dichotomously branched; internodes c. 7–15 cm long"	"Thysanotus gracilis"
23	"Anther cluster, tightly arranged and bent to one side; anthers bicoloured with the proximal half yellow and distal half purple"	24
23	"Anthers not with the above combination"	25
24	"Plant with highly branched sterile stems forming a dense interlocked tangle 10–25 cm high"	"Thysanotus kalbarriensis"
24	"Plant lacking highly branched sterile stems"	"Thysanotus sabulosus"
25	"Flowering stems annual, twining or prostrate; flowers borne singly on branches; anthers dehiscing by terminal pores"	"Thysanotus manglesianus"
25	"Flowering stems annual or perennial, not twining, erect to prostrate, or absent; flowers usually 2 or more per umbel or per panicle; anthers dehiscing by terminal pores or slits"	26
26	"Flowers or umbels borne on annual scapose inflorescence"	27
26	"Flowers or umbels borne on perennial stems"	45
27	"Inflorescence usually a single terminal umbel"	28
27	"Inflorescence paniculate, cymose or racemose, or a terminal umbel with sessile or shortly pedunculate umbels present below"	31
28	"Leaves 1 or 2, terete"	"Thysanotus gageoides"
28	"Leaves more than 2, flat to channelled or striate"	29
29	"Leaves hirsute; umbel 4- or 5-flowered"	"Thysanotus asper"
29	"Leaves glabrous; umbel 1–50-flowered"	30
30	"Umbel 20–50-flowered"	"Thysanotus brevifolius"
30	"Umbel 1–15-flowered"	"Thysanotus banksii"
31	"Fruiting pedicels erect"	32
31	"Fruiting pedicels nodding"	41
32	"Ovules more than 2 per locule"	33
32	"Ovules 2 per locule"	35
33	"Perianth segments 9 mm long; inner anthers 1.5 times length of outer anthers"	"Thysanotus brachyantherus"
33	"Perianth segments 11–17 mm long; inner anthers at least twice as long as outer anthers"	34
34	"Inflorescence branched, lower branches again branched; umbels sessile; flowers bluish"	"Thysanotus lavanduliflorus"
34	"Inflorescence simple or hardly branched; lower umbels pedunculate; flowers purplish"	"Thysanotus nudicaulis"
35	"Anthers dehiscing by terminal pore"	36
35	"Anthers dehiscing by full-length slits"	40
36	"Inflorescence paniculate"	37
36	"Inflorescence a terminal umbel with other sessile or shortly pedunculate umbels below"	38
37	"Leaves 4–5 cm long; roots fibrous"	"Thysanotus sabulosus"
37	"Leaves 20–60 cm long; roots tuberous"	"Thysanotus banksii"
38	"Leaves glaucous; flowers purple"	"Thysanotus formosus"
38	"Leaves not glaucous; flowers bluish or purple"	39
39	"Flowers bluish"	"Thysanotus baueri"
39	"Flowers purple"	"Thysanotus banksii"
40	"Inflorescence dichotomously branched for c. half its length; pedicels 6–7 mm long"	"Thysanotus tenuis"
40	"Inflorescence branched only in upper third; pedicels 3–4 mm long"	"Thysanotus pyramidalis"
41	"Leaves 10–15, filiform"	"Thysanotus acerosifolius"
41	"Leaves up to 8, not filiform"	42
42	"Leaves with tuberculate-hairy margins"	43
42	"Leaves glabrous"	44
43	"Pedicels 5–12 mm long, articulated ±medianly; fimbriae of petals 1.5–2 mm long; leaves flat"	"Thysanotus speckii"
43	"Pedicels 4–5 mm long, articulated near base; fimbriae of petals 4–5 mm long; leaves channelled"	"Thysanotus vernalis"
44	"Perianth segments 7 mm long; umbels in pairs; outer anthers 2 mm long, inner 3 mm long"	"Thysanotus parviflorus"
44	"Perianth segments 9–10 mm long; umbels single; outer anthers 3 mm long, inner 4.5 mm long"	"Thysanotus cymosus"
45	"Branches many, dichotomous; stems erect to spreading, ridged"	46
45	"Branches few, not dichotomous; stems erect, decumbent or ±prostrate, smooth, ridged or winged"	47
46	"Plant ±cylindrical in appearance, with an erect main axis and side branches, usually not more than 10 cm tall"	"Thysanotus ramulosus"
46	"Plant ±hemispherical, with many stems, usually more than 10 cm tall"	"Thysanotus dichotomus"
47	"Stems decumbent or ±prostrate"	48
47	"Stems erect"	49
48	"Stems decumbent, smooth"	"Thysanotus pseudojunceus"
48	"Stems ±prostrate, ridged"	"Thysanotus arenarius"
49	"Stems quadrangular at base, flattened above, winged"	"Thysanotus anceps"
49	"Stems terete, smooth to ridged"	50
50	"Stems not ridged, glabrous at least in upper parts"	"Thysanotus sparteus"
50	"Stems ridged, with short dense hairs or tuberculate hairs"	"Thysanotus brachiatus"
51	"Twinner; petals not fringed"	"Thysanotus exfimbriatus"
51	"Non-twinner; petals bearing an inflexed, long fringe on the upper part, the lower part of the petal margins being glabrous or with a shorter, erect fringe"	"Thysanotus fragans"