Difference between revisions of "Euphorbia trichotoma"
in A. von Humboldt et al., Nov. Gen. Sp. 2(fol.): 48; 2(qto.): 60. 1817.
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|accepted_name=Euphorbia trichotoma | |accepted_name=Euphorbia trichotoma | ||
| − | |accepted_authority=Kunth | + | |accepted_authority=Kunth |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
| − | |title=Nov. Gen. Sp. | + | |title=in A. von Humboldt et al., Nov. Gen. Sp. |
|place=2(fol.): 48; 2(qto.): 60. 1817 | |place=2(fol.): 48; 2(qto.): 60. 1817 | ||
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name=Euphorbia trichotoma | name=Euphorbia trichotoma | ||
| − | |authority=Kunth | + | |authority=Kunth |
|rank=species | |rank=species | ||
|parent rank=subgenus | |parent rank=subgenus | ||
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|distribution=Fla.;Mexico;West Indies;Central America. | |distribution=Fla.;Mexico;West Indies;Central America. | ||
|reference=None | |reference=None | ||
| − | |publication title=Nov. Gen. Sp. | + | |publication title=in A. von Humboldt et al., Nov. Gen. Sp. |
|publication year=1817 | |publication year=1817 | ||
|special status=Conservation concern | |special status=Conservation concern | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V12/V12_893.xml |
|genus=Euphorbia | |genus=Euphorbia | ||
|subgenus=Euphorbia subg. Esula | |subgenus=Euphorbia subg. Esula | ||
Latest revision as of 19:18, 5 November 2020
Herbs, perennial, with thick rootstock. Stems erect, branched, 15–40 cm, glabrous. Leaves: petiole absent; blade obovate to oblanceolate, 5–20 × 2–7 mm, base broadly attenuate, margins entire, apex acute to obtuse, surfaces glabrous; venation pinnate, very obscure, midvein prominent. Cyathial arrangement: terminal pleiochasial branches 3, each usually 1–2 times 3-branched, sometimes unbranched; pleiochasial bracts similar in shape and size to distal leaves, alternate; dichasial bracts distinct, obovate to oblanceolate, base broadly attenuate, margins entire, apex acute to obtuse; axillary cymose branches 0. Cyathia: peduncle 0.7–1 mm. Involucre hemispheric, 1–1.5 × 1.4–2 mm, glabrous; glands 5, elliptic to slightly crescent-shaped, 0.4–0.6 × 0.9–1.1 mm; horns divergent, 0.1–0.2 mm. Staminate flowers 8–10. Pistillate flowers: ovary glabrous; styles 0.2–0.4 mm, 2-fid. Capsules depressed-ovoid, 1.1–1.5 × 2–3 mm, strongly 3-lobed; cocci rounded, minutely papillate, sometimes appearing smooth, glabrous; columella 1.6–1.9 mm. Seeds white, ovoid-globose, 1.8–2 × 1.6–1.8 mm, smooth; caruncle ± rounded and flattened, 0.3 × 0.3 mm.
Phenology: Flowering and fruiting year-round (primarily spring–summer).
Habitat: Coastal beaches, sand dunes, thickets.
Elevation: 0–10 m.
Distribution
Fla., Mexico, West Indies, Central America.
Discussion
Euphorbia trichotoma is found in coastal peninsular Florida from Hillsborough County south to Key West.
Selected References
None.