1	"Flowers greatly reduced, in clusters surrounded by an involucre that resemblesa flower, the cyathium; latex present"	2
1	"Flowers not in clustered surrounded by an involure; latex usually absent"	3
2	"Cyathia radially symmetric; glands 2-8 or 1 and lateral"	Euphorbia
2	"Cyathia bilaterally symmetric; gland forming a continuous rim except for a gap on one side"	Monadenium
3	"Leaves digitate, with (3-)5-7(-8) leaflets; plants trees"	Oldfieldia
3	"Leaves simple although sometimes deeply lobed; habit various"	4
4	"Leaves opposite"	Excoecaria
4	"Leaves alternate"	5
5	"Stellate hairs and/or peltate scales present"	6
5	"Hairs absent or simple, sometimes stinging, never branched"	9
6	"Stipules laciniate, with gland-tipped segments; sepals of pistillate flowers deeply pinnatifid with linear, usually gland-tipped segments"	Cephalocroton
6	"Stipules and sepals of pistillate flowers entire"	7
7	"Plants thick-stemmed low trees or shrubs, unisexual; staminate flowers in subterminal panicles; pistillate flowers solitary or paired; fruits single-seeded subglobose drupes"	Givotia
7	"Plants herbs or selnder-stemmed trees or shrubs, with both staminate and pistillate flowers; flowers in racemes; fruits usually 3-seeded capsules, rarely only slightly dehiscent and drupe-like"	8
8	"Plants trees or shrubs; anthers inflexed in bud; seeds with a distinct caruncle"	Croton
8	"Plants herbs; anthers erect in bud; seeds at least parterially enclosed by a pale, shiny, papery outer layer"	Chrozophora
9	"Plants twining or lianescent, often with stinging hairs"	10
9	"Plants never twining, occasionally scandent, without stinging hairs"	11
10	"Inflorescences raceme-like, without leafy bracts; styles united only at the base"	Tragia
10	"Inflorescences condensed, with a pair of leafy involucral bracts; style united their whole length, forming a single column"	Dalechampia
11	"Anthers elongate, twisted, and worm-like; bracts of pistillate flowers more or less accrescent and leaf-like"	Acalypha
11	"Anthers short, straight; bracts of pistillate flowers not accrescent and leaf-like"	12
12	"Plants small annual herbs; flowers in lax spicate or racemose inflorescences"	13
12	"Plats trees, shrubs, or perennial herbs or if annual herbs, flowers not in spicate or racemose inflorescences"	14
13	"Staminate flowers with white petals"	Caperonia
13	"Staminate flowers without petals"	Micrococca
14	"Petals present; stipules usually finely branched with gland-tipped segments or spinescent"	Jatropha
14	"Petals absent; stipules not as above"	15
15	"Leaves palmately lobed or palmatafid"	16
15	"Leaves not lobed"	17
16	"Leaf margins glandular-serrate; latex absent; stamens numerous with much-branched filaments"	Ricinus
16	"Leaf margins entire; latex present; stamens 10, filaments not branched"	Manihot
17	"Fruits drupes, 5-8 mm long, reticulate-rugose when dried; flowers in leaf-opposed spikelike racemes; young shoots with brownish indumentum"	Antidesma
17	"Fruits capsules; if flowers in spikelike racemes, then these axillary; indumentum on young shoots, if any, not brownish"	18
18	"Leaves pustulate on lower surfacel; flowers in leaf-opposed clusters"	Suregada
18	"Leaves not pustulate on lower surface; flowers in axilllary clusters, spikes, or racemes"	19
19	"Staminate inflorescences long, dense; plants completely glabrous shrubs or trees with copious milky latex"	Spirostachys
19	"Staminate inflorescences less than 3 cm long; at least young shoots pubescent; latex absent"	20
20	"Sepals of staminate flowers imbricate in bud; styles shortly bifid"	Cyathogyne
20	"Sepals of staminate flowers valvate in bud; styles fimbriate"	Erythrococca