1	"Epicalyx absent or of minute teeth only"	2
1	"Epicalyx present, well-developed, sometimes rapidly deciduous"	19
2	"Anthers with 2-thecae; filaments free or united into groups 5 or 10 groups of stamens"	3
2	"Anthers with 1 thecae; filaments united at base or for most of their length into a staminal tube"	15
3	"Filaments disinct or only shortly connate at the base into 5 or 10 stamen clusters (Tiliaceae)"	4
3	"Filaments usually connate into a tube around the ovaries (Sterculiaceae)"	6
4	"Fruits drupes, 2-4 lobed or unlobed"	Grewia
4	"Fruits capsules or nuts"	5
5	"Fruits usually well over 6 mm long, usually without bristles; oavaries with more than 2 ovules per cell"	Corchorus
5	"Fruit bodies 3-6 mm long, cristly or spiny; ovary with 2 ovules per cell"	Triumfetta
6	"Flowers with a single perianth whorl; fruits of free carpels"	7
6	"Flowers with both a calyx and a corolla; fruits capsules formed by united carpels"	10
7	"Leaf blades pubescent; bark of trunk usually peeling in papery flakes; fruiting carpels with irritating hairs inside"	Sterculia
7	"Leaf blades glabrous or the lower surfaces with some hairs in the axils of the veins; bark of trunks not peeling in papery flakes; fruiting carpels without irritating hairs"	8
8	"Trees with flask-shaped trunks; calyces tubular; fruiting carpels membranous, indehiscent"	"Hildegardia {Hildegardia gillettii}"
8	"Trees with normal trunks; calyces more or less bell-shaped, not tubular; fruting carpels more or less woody, deiscent"	9
9	"Leaf blades acuminate; flowers in pendulous panicles with calyces forming a corolla-like structure 1-2 cm long; follicles 4-6 cm long with many seeds enveloped by honeycomb-like endocarps; plants cultivated trees"	Brachychiton
9	"Leaf blades obtuse to obtusely apiculate; flowers in axillary clusters with calyces shorter than 1 cml follicles about 2 cm long, 1-seeded; plants native trees"	"Cola {Cola clavata}"
10	"Staminodes absent"	11
10	"Staminodes present, conspicuous"	13
11	"Ovaries 1-celled, with 2 ovules; capsules 2-celled"	Waltheria
11	"Ovaries and capsules 5-celled"	12
12	"Anthers obtuse; filaments united into a tube; petals white"	"Melochia {Melochia corchorifolia}"
12	"Anthers acuminate; filaments free or only shortly united; petals reddish or yellow"	Hermannia
13	"Fertile stamens 5"	Melhania
13	"Fertile stamens 10-15"	14
14	"Petals white; fruits without prickles of plimose bristles"	"Dombeya {Dombeya taylorii}"
14	"Petals yellowl fruits with prickles or bristlesq"	Harmsia
15	"Leaves palmately compound"	16
15	"At least some, usually all, leaves usually simple to palmately lobed"	17
16	"Plants unarmed; pedicels leaves and ovaries pubescent; stamens numerous"	"Adansonia {Adansonia digitata}"
16	"Plants spiny; pedicels, leaves, and ovaries glabrous or almost so; stamens 10-15"	"Ceiba {Ceiba pentandra}"
17	"Fruits loculicidal capsules; plants annual"	Hibiscus
17	"Fruits schizocarps of indehiscent or variously dehiscent mericarps"	18
18	"Ovules 3 or more per carpel; mericarps opening by apical slits"	Abutilon
18	"Ovules 1 per carpel; mericarps indehiscent or irregularly dehiscent"	Sida
19	"Calyces splitting on one side during expansion of the corollas, circumscissile at the base, adnate to the corolla and falling with it; fruits elongate capsules at least 3 cm long"	Abelmoschus
19	"Calyces not as above; fruits various, not as above"	20
20	"Calyces with entire margins or woth short, widelyspaced teeth; indumentum of scale-like hairs; fruits inhehiscent, berrylike"	Thespesia
20	"Calyces usually distinctly 5-lobed; indumentum usually of stellate hairs, never of scale-like hairs; fruits dehiscent, capsules or schizocarps"	21
21	"Fruits schizocarps with indehiscent mericarps"	22
21	"Frtuis capsules, sometimes separating from the receptacle and disintegrating at maturity"	24
22	"Epicalyces with 5 or more bracts"	Pavonia
22	"Epicalyces with 3 bracts"	23
23	"Corollas yellow or orange, without darker veins; mericarps with apical to dorsal spurs"	"Malvastrum {Malvastrum coromandelianum}"
23	"Corollas usually white to pink, ragnet, orange or red, sometimes with darker veins; mericarps without spurs"	"Malva {Malva parviflora}"
24	"Calyces without dark oil-glands; styles with 5 distinct branches"	25
24	"Calyces with distinct dark oil-glands; style not distinctly branched"	26
25	"Epicalyx bracts 5 or more, filiform to linear or spathulate, now with cordate bases"	Hibiscus
25	"Epicalyx bracts 3, broadly ovate-cordate"	"Senra {Senra incana}"
26	"Epicalyx bracts about 9; calyces with dark oil glands over the veins"	"Cienfuegosia {Cienfuegosia welshii}"
26	"Epicalyx bracts 3; calyces with irregularly scattered dark oil glands"	Gossypium