Difference between revisions of "Euphorbia pergamena"
Bull. Torrey Bot. Club 25: 615. 1898.
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|name=Chamaesyce adenoptera subsp. pergamena | |name=Chamaesyce adenoptera subsp. pergamena | ||
|authority=(Small) D. G. Burch | |authority=(Small) D. G. Burch | ||
| + | |rank=subspecies | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=C. pergamena | |name=C. pergamena | ||
|authority=(Small) Small | |authority=(Small) Small | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Euphorbia adenoptera subsp. pergamena | |name=Euphorbia adenoptera subsp. pergamena | ||
|authority=(Small) Oudejans | |authority=(Small) Oudejans | ||
| + | |rank=subspecies | ||
}} | }} | ||
|hierarchy=Euphorbiaceae;Euphorbia;Euphorbia sect. Anisophyllum;Euphorbia pergamena | |hierarchy=Euphorbiaceae;Euphorbia;Euphorbia sect. Anisophyllum;Euphorbia pergamena | ||
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name=Euphorbia pergamena | name=Euphorbia pergamena | ||
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|authority=Small | |authority=Small | ||
|rank=species | |rank=species | ||
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|publication year=1898 | |publication year=1898 | ||
|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_175.xml |
|genus=Euphorbia | |genus=Euphorbia | ||
|section=Euphorbia sect. Anisophyllum | |section=Euphorbia sect. Anisophyllum | ||
Latest revision as of 19:13, 5 November 2020
Herbs, perennial, with moderately to strongly thickened rootstock. Stems prostrate to ascending, occasionally mat-forming, terete to slightly flattened, 5–18 cm, glabrous on lower surface, strigillose to sericeous on upper surface. Leaves opposite; stipules distinct, subulate, better developed on lower side of stem, 0.4–1.3 mm, glabrous or pilose; petiole 0.3–0.5 mm, puberulent, sericeous, or strigillose; blade oblong to ovate, 4–7 × 2–4 mm, base asymmetric, hemicordate, larger side sometimes amplexicaulous, margins entire or serrulate, apex obtuse, surfaces puberulent, sericeous, or strigillose; 3-veined from base, lateral veins inconspicuous. Cyathia solitary at distal nodes or at nodes of short, congested, axillary shoots; peduncle to 0.5 mm. Involucre campanulate, 1–1.3 × 1–1.1 mm, canescent; glands 4, pinkish, oblong or reniform, 0.2 × 0.4–0.6 mm; appendages white to pink, lunate, unequal, those of proximal glands oblique, 0.6–1 × 1.4–1.6 mm, those of distal glands symmetric, 0.3 × 0.8–0.9 mm, irregularly undulate to incised. Staminate flowers 15. Pistillate flowers: ovary puberulent, sericeous or strigillose; styles 0.5–1 mm, 2-fid at apex. Capsules oblate, well exserted from involucre at maturity, 1–1.3 × 1.3–1.8 mm, puberulent, sericeous or strigillose; columella 1 mm. Seeds whitish to gray, ovoid, 4-angled in cross section, 0.7–0.8 × 0.5–0.6 mm, with 3–4 transverse sulci alternating with low transverse ridges.
Phenology: Flowering and fruiting year-round.
Habitat: Crevices of limestone outcrops in pinelands and pine-palm woods.
Elevation: 0–10 m.
Distribution
Fla., West Indies (Cuba, Hispaniola).
Discussion
Euphorbia pergamena is a Florida-listed threatened species known within the flora area from only Miami-Dade and Monroe counties in extreme southern Florida. The species is often included as a subspecies of E. adenoptera (for example, D. G. Burch 1965), but here A. Herndon (1993b) is followed and it is treated as a distinct species.
Selected References
None.