Difference between revisions of "Rhynchospora floridensis"
Repert. Spec. Nov. Regni Veg. 49: 82. 1940.
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|name=Dichromena floridensis | |name=Dichromena floridensis | ||
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| + | |publication_title=in J. K. Small, Fl. S.E. U.S., | ||
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|genus=Rhynchospora | |genus=Rhynchospora | ||
|species=Rhynchospora floridensis | |species=Rhynchospora floridensis | ||
Latest revision as of 20:40, 5 November 2020
Illustrator:
Copyright:
Plants perennial, cespitose, 20–50 cm, wiry; rhizomes absent. Culms erect to spreading, leafybased; scapes nearly filiform, nearly trigonous, few ribbed. Leaves spreading to erect, exceeded by scape; blades filiform to linear, proximally flat or involute, becoming involute, 0.4–2 mm wide, apex tapering, trigonous. Inflorescences terminal, solitary, headlike, dense, white, leafyinvolucrate, 0.5–1 cm wide; involucral bracts 3–6, spreading to recurved, whitebased, greentipped, narrowly linear, longest bract elongatesubulate, 4–8 cm × 2–5 mm. Spikelets white, ovoid, 4–6 mm; scales several, boatshaped, basal ones with ciliolate keel, fertile ones 3–3.8 mm. Flowers: perianth absent. Fruits 1–1.2 mm; body yellow to black, nearly orbicular, tumidly lenticular, 0.8–1 × 0.6–0.7(–1) mm; surface lattices shortlinear, vertical in fine undulating rows, with ends raised to rounded, transverse rugulosities; tubercle lowtriangular, lunate, 0.2–0.3 mm, apex acute, blunt or apiculate.
Phenology: Fruiting spring–fall, or all year.
Habitat: Moist open areas over reef limestones, rocky pine savanna
Elevation: 0–50 m
Distribution
Fla., Mexico (Chiapas, Yucatán), West Indies (Bahamas), Central America (Belize).
Discussion
Rhynchospora floridensis is much like R. colorata, with which it is often associated; it can be easily distinguished by its strictly cespitose habit and its ciliolate spikelet scale keels.
Selected References
None.