1	"Most or all leaves with an elongate gland on the midrib (lower surface, near the lamina base)"	2
1	"All leaves without a gland"	11
2	"Leaves entire or crenulate; stipules ovate; epicalyx fused in lower half"	"Hibiscus tiliaceus"
2	"Leaves toothed and/or lobed; stipules linear; epicalyx segments free"	3
3	"Stellate hairs on calyx absent or vastly outnumbered by simple hairs"	4
3	"Calyx lobes with predominantly stellate hairs (simple hairs may also be present)"	6
4	"Each calyx lobe with >100 simple hairs; capsule densely hairy throughout"	"Hibiscus diversifolius"
4	"Each calyx lobe with < 30 simple hairs; capsule sparsely hairy throughout, with a few hairs near the apex, or glabrous"	5
5	"Calyx and epicalyx bright red; epicalyx segments 1.2-5 mm wide; naturalised species"	"Hibiscus sabdariffa"
5	"Calyx and epicalyx green to white; epicalyx segments 0.7-1.1 mm wide; native species"	"Hibiscus meraukensis"
6	"Epicalyx segments 6-8 mm long; calyx hairs very dense, obscuring surface"	"Hibiscus zonatus"
6	"Epicalyx segments 9-30 mm long; calyx hairs sparse to dense, surface visible"	7
7	"Larger stellate hairs on calyx 1-3 mm across"	8
7	"Larger stellate hairs on calyx 0.3-1 mm across"	10
8	"Branchlets with longitudinal lines of dense stellate hairs, otherwise stellate hairs scattered and not overlapping, tuberculate aculeate hairs present and with 2-6 rays"	"Hibiscus forsteri"
8	"Branchlets with stellate hairs uniformly dense (overlapping), longitudinal lines of stellate hairs absent or not apparent, tuberculate aculeate hairs either absent or simple"	9
9	"Tuberculate aculeate hairs on branchlets present, simple; pedicels 45-60 mm long"	"Hibiscus townsvillensis"
9	"Tuberculate aculeate hairs on branchlets absent; pedicels 15-38 mm long"	"Hibiscus sankowskyorum"
10	"Stellate hairs on calyx very sparse to moderately dense, uncoloured, with 4-15 rays"	"Hibiscus divaricatus"
10	"Stellate hairs on calyx dense to very dense, yellow to rusty in colour, with 10-30 rays"	"Hibiscus heterophyllus"
11	"Leaves entire or evenly toothed, but not lobed"	12
11	"Leaves shallowly to deeply lobed, or with +/- separate leaflets"	24
12	"Epicalyx segments (non-fused portion) 1-8 mm long"	13
12	"Epicalyx segments (non-fused portion) 8.5-27 mm long"	17
13	"Epicalyx fused at base for at least 2 mm into a bowl-like structure"	"Hibiscus sturtii"
13	"Epicalyx unfused or fused for < 1 mm"	14
14	"Corolla 50-58 mm long; hairs on calyx lobes very dense, obscuring surface; epicalyx segments 1.2-1.9 mm wide"	"Hibiscus zonatus"
14	"Corolla 11-32 mm long; hairs on calyx lobes sparse to dense, surface visible; epicalyx segments 0.2-0.5 mm wide"	15
15	"Leaf indumentum dense (hairs overlapping on upper surface); corolla hairy on outer surface; flower/fruit stalk 6-11 mm long"	"Hibiscus brachychlaenus"
15	"Leaf indumentum sparse (hairs not overlapping on upper surface); corolla glabrous on outer surface; flower/fruit stalk 15-54 mm long"	16
16	"Corolla 11-15 mm long; capsule with patent hairs throughout; seeds with long spreading hairs 3-4 mm long"	"Hibiscus burtonii"
16	"Corolla 20-25 mm long; capsule with appressed hairs at apex only; seeds with very short appressed hairs c. 0.2 mm long"	"Hibiscus leptocladus"
17	"Leaves oblanceolate to obovate, tapering to a petiole 3-9 mm long; flowers 1-5 per leaf axil"	18
17	"Leaves ovate, lanceolate or elliptical, with a petiole at least 10 mm long; flowers solitary in leaf axils"	20
18	"Epicalyx fused for about half its length, segments 5"	"Hibiscus tozerensis"
18	"Epicalyx free almost throughout, segments 6-9"	19
19	"Epicalyx segments 1.7-5 mm wide; corolla white"	"Hibiscus macilwraithensis"
19	"Epicalyx segments 0.2-0.4 mm wide; corolla pink to red"	"Hibiscus propulsator"
20	"Branchlets with patent setae 2-4 mm long; epicalyx segments and branchlets with many glandular hairs"	"Hibiscus setulosus"
20	"Branchlets lacking patent setae; epicalyx segments and branchlets without glandular hairs"	21
21	"Epicalyx segments 0.7-1.1 mm wide"	22
21	"Epicalyx segments 1.4-16 mm wide"	23
22	"Epicalyx segments 9-12 mm long; branchlets without aculeate hairs (“prickles”); calyx 9-16 mm long; flower/fruit stalk 10-15 mm long"	"Hibiscus krichauffianus"
22	"Epicalyx segments 16-27 mm long; branchlets with few to many broad-based aculeate hairs (“prickles”); calyx 26-39 mm long; flower/fruit stalk 28-70 mm long"	"Hibiscus splendens"
23	"Indumentum on leaves and branchlets sparse; epicalyx segments 6-8, each 1.4-2.7 mm wide; corolla 50-80 mm long"	"Hibiscus rosasinensis"
23	"Indumentum on leaves and branchlets dense; epicalyx segments 5, each 8-16 mm wide; corolla 30-40 mm long"	"Hibiscus normanii"
24	"Leaves divided right to base, forming +/- separate leaflets"	25
24	"Leaves not divided right to base"	27
25	"Leaflets 5; epicalyx segments 19-34 mm long; corolla 35-46 mm long"	"Hibiscus pentaphyllus"
25	"Leaflets 3; epicalyx segments 6-11 mm long; corolla 12-30 mm long"	26
26	"Calyx lobes with 5 dark-coloured longitudinal veins; corolla white with maroon throat, 22-30 mm long, hairy on outer surface"	"Hibiscus tridactylites"
26	"Calyx lobes with 1 or 3 longitudinal veins, veins no darker than rest of calyx; corolla pink, 12-15 mm long, glabrous"	"Hibiscus brachysiphonius"
27	"Epicalyx segments spathulate i.e. broadest towards the apex"	28
27	"Epicalyx segments parallel-sided or tapered from base"	29
28	"Branchlet indumentum extending < 1 mm from branchlet surface, hairs stellate only"	"Hibiscus fluvialis"
28	"Branchlet indumentum extending 2-3 mm from branchlet surface, hairs stellate and simple"	"Hibiscus panduriformis"
29	"Branchlets with few to many broad-based aculeate hairs (“prickles”); corolla 65-100 mm long"	"Hibiscus splendens"
29	"Branchlets without aculeate hairs (“prickles”); corolla 12-65 mm long"	30
30	"Branchlet indumentum shaggy, hairs extending 2-4 mm from branchlet surface"	"Hibiscus saponarius"
30	"Branchlet indumentum not shaggy, hairs extending < 1 mm from branchlet surface"	31
31	"Branchlet hairs wholly or predominantly simple"	"Hibiscus vitifolius"
31	"Branchlet hairs wholly or predominantly stellate"	32
32	"Branchlet indumentum very dense, obscuring branchlet surface, stellate hairs with > 30 rays; naturalised species"	"Hibiscus mutabilis"
32	"Branchlet indumentum sparse to dense, branchlet surface visible, stellate hairs with 2-15 rays; native species"	33
33	"Branchlet indumentum dense (hairs overlapping); epicalyx segments 3.5-5 mm long"	"Hibiscus solanifolius"
33	"Branchlet indumentum sparse (hairs not overlapping); epicalyx segments 7.5-12 mm long"	"Hibiscus verdcourtii"