No key was found for the requested taxon, but it has only one child: Bernardia myricifolia. Showing where it is keyed below.

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Key to Euphorbiaceae

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1 Plant a twining vine (herbaceous or woody at base) to 5 m long; stem with stinging hairs; [subfamily Acalyphoideae]  Dalechampia scandens var. scandens

1 Plant not twining; instead a tree, shrub, or herb (or weakly twining in some Tragia, but then less than 1 m long); stem either armed with stinging hairs, or not armed.

2 Shrub or tree (woody).

3 Leaves entire.

4 Hairs of vegetative parts of the plant (especially the leaf undersurface) present and either 2-branched, stellate, or modified into lepidote scales (use 10× or more magnification); [subfamily Crotonoideae].  Croton

4 Hairs of vegetative parts of the plant (especially the leaf undersurface) absent or unbranched (simple) (use 10× or more magnification).

5 Flowers enclosed in a cyathium; plant with copious white latex; [subfamily Euphorbioideae]  Euphorbia

5 Flowers not enclosed in a cyathium; plant either with or without white latex (the sap clear to whitish or absent).

6 Leaf blades 1-1.5× as long as wide; [exotic trees].

7 Petioles 9-19 cm long; [subfamily Crotonoideae]  Jatropha curcas

7 Petioles 2-6 cm long; [subfamily Acalyphoideae]  Triadica sebifera

6 Leaf blades 1.5-5× as long as wide; native or exotic shrubs or, rarely, small trees.

8 Sepals absent; latex watery; leaf margins obscurely gland-toothed; [subtropical hardwood hammocks of far southern FL]; [subfamily Euphorbioideae]  Gymnanthes lucida

8 Sepals present; latex absent or watery; leaf margins entire; [various habitats and collectively widespread].

9 Latex colorless to whitish, watery; capsules ovoid or ellipsoidal; [FL peninsula and s. TX]; [subfamily Crotonoideae]  Jatropha

9 Latex absent; capsules subglobose; [collectively widespread in our region].

10 Leaves palmately veined at base; inflorescence bracts not subtended by glands; [s. TX and southwards]; [subfamily Acalyphoideae]  Adelia vaseyi

10 Leaves pinnately veined; inflorescence bracts with 2 subtending glands; [widespread from NC to FL west to AR and e. TX]; [subfamily Euphorbioideae]  Ditrysinia fruticosa

3 Leaves crenate, serrate, and/or palmately lobed.

11 Plants hairy with 2-branched hairs (malpighiaceous trichomes); [subfamily Acalyphoideae]  Argythamnia

11 Plants either glabrous or hairy with simple or stellate trichomes.

12 Leaves palmately lobed, margins entire or serrate.

13 Petals absent; inflorescence a panicle; leaf lobe margins serrate; [subfamily Acalyphoideae]  Ricinus communis

13 Petals present; inflorescence a cyme or dichasium; leaf lobe margins entire or serrate; [subfamily Crotonoideae].

14 Shrub or tree; inflorescence a fascicle or cyme; capsule ellipsoidal  Jatropha

14 Tree; inflorescence a dichasium; capsule subglobose  Vernicia fordii

12 Leaves unlobed, margins crenate (obscurely crenate in Hippomane and Adelia) or serrate.

15 Leaves 8-20× as long as wide (lanceolate to linear); petiole with 0 or 2 glands at summit.

16 Petiole with 2 glands at summit; [exotic, on ballast in Pensacola, FL]  Sapium haematospermum

16 Petiole lacking 2 glands at summit; [native, widespread in our area]  Stillingia aquatica

15 Leaves 1-3× as long as wide (elliptic, ovate, or obovate); petiole with 0 or 1 gland at summit.

17 Lower leaf surface densely stellate-pubescent; leaf strongly toothed; [TX]; [subfamily Acalyphoideae]  Bernardia myricifolia

17 Lower leaf surface glabrous; leaf entire, obscurely crenate, or serrulate.

18 Leaf blades obovate, 2-3× as long as wide, with a rounded apex; petiole < 0.2 cm long; fruit a capsule, 1.0-1.3 cm in diameter; [TX]; [subfamily Acalyphoideae]  Adelia vaseyi

18 Leaf blades ovate, 1-2× as long as wide, with an acute apex; petiole 1-6 cm long; fruit a drupe, 1.5-2.5 cm in diameter; [FL]; [subfamily Euphorbioideae]  Hippomane mancinella

2 Herb.

19 Leaves palmately deeply divided into 3-many lobes.

Show caption*© Alexis López Hernández, some rights reserved (CC BY), uploaded by Alexis López Hernández                                          20 Plants with a prominent, round woody shallow subterranean caudex to 13.5 cm in diameter; [subfamily Crotonoideae]  Jatropha cathartica

20 Plants lacking a prominent subterranean caudex.

21 Leaves peltate; plant glabrous; stamens 100-1000; [subfamily Acalyphoideae]  Ricinus communis

21 Leaves cordate to truncate or rounded at base; plant glabrous, stellate, or with conspicuous stinging trichomes; stamens 8-15; [subfamily Crotonoideae].

22 Plant with stinging trichomes; stamens connate  Cnidoscolus

22 Plant lacking stinging trichomes; stamens separate.

23 Latex clear; pubescence stellate  Astraea lobata

23 Latex white; pubescence absent or of non-stellate hairs  Key to Manihot

19 Leaves generally not lobed, entire or serrate (rarely pinnately lobed in Euphorbia).

24 Plants hairy with stellate hairs and/or scales; [subfamily Crotonoideae]  Croton

24 Plants glabrous or hairy with simple or 2-branched hairs.

25 Plants hairy with 2-branched hairs (malpighiaceous trichomes); [subfamily Acalyphoideae]  Argythamnia

25 Plants glabrous or hairy with simple hairs.

26 Flowers enclosed in a cyathium; plant (fresh) with copious white latex; [subfamily Euphorbioideae]  Euphorbia

26 Flowers not enclosed in a cyathium; plant (fresh) with or without white latex.

27 Flowers in terminal spikes; stout perennial with several to many stems arising from a subterranean crown; [subfamily Euphorbioideae]  Stillingia

27 Flowers strictly axillary or both axillary and terminal, in small clusters, racemes, or spikes; finer perennial or annual, not typically with > 1 stem arising from a subterranean crown; [subfamily Acalyphoideae]

28 Leaves opposite; carpels 2  Mercurialis

28 Leaves alternate; carpels 3 (sometimes fewer by abortion).

29 Pistillate flowers subtended by a conspicuous leafy bract  Acalypha

29 Pistillate flowers lacking a leafy bract.

30 Plant lacking stinging trichomes; styles deeply multifid; [wetland habitats]  Caperonia

30 Plant with stinging trichomes; styles undivided; [upland habitats]  Tragia