Rhynchospora nitens

(Vahl) A. Gray

Manual ed. 5, 568. 1867.

Basionym: Scirpus nitens Vahl Enum. Pl. 2: 272. 1805
Synonyms: Isolepis nitens (Vahl) Roemer & Schultes Psilocarya nitens (Vahl) Alph. Wood Psilocarya rhynchosporoides Torrey
Treatment appears in FNA Volume 23. Treatment on page 217. Mentioned on page 202.
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Plants annual, cespitose or solitary, (10–)20–100 cm; rhizomes absent. Culms erect, leafy, nearly terete or angled, manyribbed. Principal midculm leaves often exceeding inflorescences; blades linear, proximally flattened, 1–5 mm wide, apex trigonous, tapering. Inflorescences terminal and axillary, clusters of corymbs 1–5, usually diffuse; leafy bracts exceeding proximal corymbs. Spikelets dark brown, lanceoloid to ovoid, mostly 4–6(–8) mm, apex acute; fertile scales many, ovate, rounded-convex, 2–3.5 mm, apex acute, midrib mostly included, rarely forming apiculus. Flowers: perianth absent. Fruits 1–1.3(–1.5) mm, body dark brown, tumidly lenticular, nearly orbicular, 0.7–1 × 0.7–1 mm, margins strong, interrupted at tubercle base; surfaces irregularly transversely rugulose with wavy rows of vertical, linear, raised cells; tubercle depressed-triangular, 0.1–0.3 mm, capping fruit summit, base broadly 2lobed.

Phenology: Fruiting summer–fall or all year.
Habitat: Moist to wet sands or peats of stream banks, pond shores, depressions in savannas, marshes
Elevation: 0–100 m


V23 375-distribution-map.jpg

Ala., Del., Fla., Ga., Ind., La., Mass., Mich., Miss., N.J., N.Y., N.C., S.C., Tex., Va., West Indies, Central America.


Selected References


Lower Taxa

... more about "Rhynchospora nitens"
Robert Kral +
(Vahl) A. Gray +
Scirpus nitens +
Ala. +, Del. +, Fla. +, Ga. +, Ind. +, La. +, Mass. +, Mich. +, Miss. +, N.J. +, N.Y. +, N.C. +, S.C. +, Tex. +, Va. +, West Indies +  and Central America. +
0–100 m +
Moist to wet sands or peats of stream banks, pond shores, depressions in savannas, marshes +
Fruiting summer–fall or all year. +
Illustrated +
Isolepis nitens +, Psilocarya nitens +  and Psilocarya rhynchosporoides +
Rhynchospora nitens +
Rhynchospora +
species +