1	"Cauline leaves peltate, the concave lamina orbicular, reniform or crescentic"	2
1	"Leaves not peltate; cauline leaves if present linear, spathulate or flabelliform"	41
2	"Leaf lamina distinctly orbicular"	3
2	"Leaf lamina reniform, ovate or crescentic"	21
3	"Basal rosette of leaves present"	4
3	"Basal leaves absent, all leaves cauline"	5
4	"Plants erect; petals white"	"Drosera andersoniana"
4	"Plants climbing or scrambling; petals yellow"	"Drosera subhirtella"
5	"Sepals glabrous"	6
5	"Sepals glandular-pubescent or hirsute"	15
6	"Stems erect; inflorescence glabrous"	7
6	"Stem climbing or scrambling; inflorescence glabrous or hirsute"	13
7	"Stem branched"	8
7	"Stem unbranched"	9
8	"Inflorescence a one-sided raceme; petals 3–4 mm long"	"Drosera subtilis"
8	"Intlorescence paniculate; petals 4–6 mm long"	"Drosera myriantha"
9	"Leaves dimorphic, the lowermost whorled, reduced and linear"	"Drosera fimbriata"
9	"Leaves not dimorphic"	10
10	"Leaf lamina distinctly conical, inverted"	"Drosera huegelii"
10	"Leaf lamina shallowly concave"	11
11	"Sepals iridescent green; petiole 2–3 mm long"	"Drosera microphylla"
11	"Sepals not iridescent green; petiole 3–6 mm long"	12
12	"Bracts present; inflorescence 1–5–flowered"	"Drosera bulbigena"
12	"Bracts absent; inflorescence 5–15–flowered"	"Drosera radicans"
13	"Inilorescence hirsute; petals yellow"	"Drosera subhirtella"
13	"lnflorescence glabrous; petals white"	14
14	"Stem climbing, up to 1.5 m long; petals 8–12 mm long"	"Drosera pallida"
14	"Stem scrambling or almost erect, up to 0.5 m long; petals 4–6 mm long"	"Drosera myriantha"
15	"Leaves scattered"	16
15	"Leaves in groups of 3"	17
16	"Stem branched"	"Drosera marchantii"
16	"Stem unbranched"	"Drosera banksii"
17	"Stem erect, self-supporting"	18
17	"Stem climbing"	19
18	"Stem rigid, glandular-hirsute"	"Drosera stricticaulis"
18	"Stem not rigid, glabrous"	"Drosera andersoniana"
19	"Upper part of stem glabrous"	"Drosera menziesii"
19	"Upper part of stem glandular-hirsute"	20
20	"Leaf lamina 4–10 mm diam., deeply concave; petals white, pink or rarely red"	"Drosera macrantha"
20	"Leaf lamina 2–3.5 mm diam., shallowly concave; petals yellow"	"Drosera subhirtella"
21	"Plants with basal rosette of leaves"	22
21	"Plants with only cauline leaves"	26
22	"Stem climbing or scrambling, unbranched; petals yellow"	"Drosera subhirtella"
22	"Stem erect, sometimes branched; petals white"	23
23	"Leaves orbicular to reniform"	"Drosera andersoniana"
23	"Leaves distinctly crescentic with acute lobes"	24
24	"Sepals pubescent"	"Drosera peltata"
24	"Sepals glabrous"	25
25	"Seeds narrowly ellipsoidal or cylindrical, 0.2–0.6 mm long; sepals 2–4 mm long, dentate, ciliate; petals 4–6 mm long"	"Drosera peltata"
25	"Seeds narrowly linear to oblong, 0.6–1.3 mm long; sepals 3–6 mm long, dentate; petals 5–8 mm long"	"Drosera auriculata"
26	"Flowers with 8–12 petals"	"Drosera heterophylla"
26	"Flowers 5–merous"	27
27	"Stem branching"	28
27	"Stem unbranched"	32
28	"Leaf lamina less than 2 mm wide; sepals less than 2 mm long"	"Drosera graniticola"
28	"Leaf lamina more than 4 mm wide; sepals more than 2 mm long"	29
29	"Plant up to 1 m tall, much-branched, with many prophylls near base"	"Drosera gigantea"
29	"Plant less than 0.5 m tall, few-branched, with few or no prophylls on lower stem"	30
30	"Sepals pubescent"	"Drosera peltata"
30	"Sepals glabrous"	31
31	"Seeds narrowly ellipsoidal or cylindrical, 0.2–0.6 mm long; sepals 2–4 mm long, dentate, ciliate; petals 4–6 mm long"	"Drosera peltata"
31	"Seeds narrowly linear to oblong, 0.6–1.3 mm long; sepals 3–6 mm long, dentate; petals 5–8 mm long"	"Drosera auriculata"
32	"Stem climbing or scrambling"	33
32	"Stem erect"	37
33	"Leaves crescentic, with acute lobes"	34
33	"Leaves orbicular or slightly reniform"	35
34	"Stem glandular-pubescent in upper part; sepals 3–5 mm long"	"Drosera modesta"
34	"Stem glabrous; sepals 5–7 mm long"	"Drosera neesii"
35	"Petals yellow"	"Drosera subhirtella"
35	"Petals red, pink or white"	36
36	"Sepals glabrous; petals white"	"Drosera pallida"
36	"Sepals hairy; petals red, pink or rarely white, ageing pink"	"Drosera menziesii"
37	"Leaves orbicular to reniform"	"Drosera andersoniana"
37	"Leaves crescentic, with acute lobes"	38
38	"Leaves in groups of 3"	"Drosera modesta"
38	"Leaves scattered"	39
39	"Sepals pubescent"	"Drosera peltata"
39	"Sepals glabrous"	40
40	"Seeds narrowly ellipsoidal or cylindrical, 0.2–0.6 mm long; sepals 2–4 mm long, dentate, ciliate; petals 4–6 mm long"	"Drosera peltata"
40	"Seeds narrowly linear to oblong, 0.6–1.3 mm long; sepals 3–6 mm long, dentate; petals 5–8 mm long"	"Drosera auriculata"
41	"Leaf lamina linear, simple or once-forked"	42
41	"Leaf lamina not linear"	43
42	"Leaf lamina simple"	"Drosera indica"
42	"Leaf lamina once-forked"	"Drosera binata"
43	"Leaf lamina longer than petiole or petiole absent"	44
43	"Leaf lamina with distinct petiole longer than lamina"	57
44	"Leaves all or mostly cauline"	45
44	"Leaves all rosetted, mostly in a flat whorl, sometimes erect"	47
45	"Cauline leaves whorled"	"Drosera stolonifera"
45	"Cauline leaves scattered"	46
46	"Stem single; inflorescence terminal"	"Drosera platypoda"
46	"Stems usually 2; inflorescence arising from basal rosette"	"Drosera ramellosa"
47	"Leaves mostly erect"	48
47	"Leaves mostly in flat whorl"	51
48	"Scapes 1–3–f1owered"	49
48	"Scapes more than 10–flowered"	50
49	"Carnivorous leaves 4-6; stigma white”"	"Drosera arcturi"
49	"Carnivorous leaves 2-3; stigma pink”"	"Drosera murfettii"
50	"Leaves narrowly lanceolate, 10–25 cm long"	"Drosera adelae"
50	"Leaves obovate, 8–10 cm long"	"Drosera schizandra"
51	"Inflorescence racemose, usually 1–sided"	52
51	"Inflorescence cymose, paniculate, or plant with l–40 individual scapes"	54
52	"Petals 8–10 mm long, bright pink or red-purple"	"Drosera hamiltonii"
52	"Petals less than 6 mm long, white or yellow"	53
53	"Bracts 3–partite; calyx minutely glandular"	"Drosera spatulata"
53	"Bracts simple; calyx tuberculate"	"Drosera burmanni"
54	"Flowers in cymes or panicles"	55
54	"Flowers on individual scapes"	56
55	"Lamina broadly spathulate, green, red, or green with a red midrib"	"Drosera erythrorhiza"
55	"Lamina flabellate, the distal margin red"	"Drosera zonaria"
56	"Scapes 1–4–flowered; leaves 2.5–10 cm long"	"Drosera macrophylla"
56	"Scapes 1–flowered, rarely 2–flowered; leaves 0.8–3.5 cm long"	"Drosera whittakeri"
57	"Lamina distinctly reniform"	"Drosera prolifera"
57	"Lamina orbicular, suborbicular, elliptic or rarely flabelliform"	58
58	"Plant more than 5 cm across; petioles densely woolly, very rarely glabrous"	"Drosera petiolaris"
58	"Plants minute, usually less than 5 cm across"	59
59	"Sepals and petals 4"	"Drosera pygmaea"
59	"Sepals and petals 5"	60
60	"Leaf lamina 9–12 mm diam.; styles 3, bi- or tri-furcate"	"Drosera glanduligera"
60	"Leaf lamina 0.5–7 mm long; styles 3–5, simple"	61
61	"Leaf lamina narrowly elliptic or narrowly oblong"	62
61	"Leaf lamina orbicular, suborbicular or spathulate"	64
62	"Calyx red-hirsute; leaf lamina 6–7 mm long"	"Drosera barbigera"
62	"Calyx not red-hirsute; leaf lamina 2.5–6 mm long"	63
63	"Leaf lamina c. 2.5 mm long; petioles 10–15 mm long"	"Drosera dichrosepala"
63	"Leaf lamina 4–6 mm long; petioles 4–5 mm long"	"Drosera scorpioides"
64	"Leaf lamina 0.5–1 mm wide; calyx glabrous"	"Drosera occidentalis"
64	"Leaf lamina 1–5 mm wide; calyx hirsute"	65
65	"Petioles distinctly flattened, 2–2.5 mm wide"	"Drosera pulchella"
65	"Petiole terete or only slightly flattened, less than 1.5 mm wide"	66
66	"Styles tapering from base"	67
66	"Styles terminating in a distinctly clavate, reniform or falcate-spathulate stigma"	70
67	"Stipules forming a dense, rounded or angled cluster; petioles 2–5 mm long"	68
67	"Stipules not forming a dense cluster; petioles 5–7 mm long"	69
68	"Stipules forming a grey-white, acute, angled cluster; scape 3–4 cm long"	"Drosera parvula"
68	"Stipules forming a white, rounded cluster; scape 6–10 cm long"	"Drosera pycnoblasta"
69	"Scapes 2–4, less than 5 cm long; petals 3–4 mm long"	"Drosera paleacea"
69	"Scape l, 5–12 cm long; petals 5–10 mm long"	"Drosera leucoblasta"
70	"Styles 3–5 mm long; scape 5–12 cm long"	"Drosera leucoblasta"
70	"Styles less than 2 mm long; scapes usually less than 5 cm long"	71
71	"Stigma clavate; petals dark red-orange"	"Drosera platystigma"
71	"Stigma reniform or falcate-spathulate; petals white"	72
72	"Leaf lamina 1–2 mm long; stigma reniform"	"Drosera nitidula"
72	"Leaf lamina 3–5 mm long; stigma flat, falcate-spathulate"	"Drosera omissa"