Rhynchospora nitens

(Vahl) A. Gray

Manual ed. 5, 568. 1867.

Illustrated
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 depressedtriangular, 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

Distribution

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

Discussion

Selected References

None.

Lower Taxa

None.

"shortened" is not a number."wider" is not a number.

... more about "Rhynchospora nitens"
acute;acute;tapering;trigonous +
Robert Kral +
(Vahl) A. Gray +
2-lobed +  and lunate +
Scirpus nitens +
scabridulous +  and scabrid +
flattened +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
dark-brown +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
warty +, papillate +, alveolate +  and pitted +
orbicular +  and lenticular +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
angled +  and terete +
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 +
distalmost +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
biconvex +  and trigonous +
Moist to wet sands or peats of stream banks, pond shores, depressions in savannas, marshes +
erect +, rarely +  and spreading +
3-ranked +  and polystichous +
cauline +  and basal +
keeled;terete;keeled;terete +
revolute +  and involute +
decurrent +
plumed +  and barbed +
deciduous +  and persistent +
shorter or longer +
of 2-12(-20) bristles +
Fruiting summer–fall or all year. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
adventitious +
basal +  and proximal +
rounded-convex;ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
cylindric +
Illustrated +
1 +, 3 +  and 100 +
lanceoloid;ovoid +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
cleft +, 2-fid +  and undivided +
Isolepis nitens +, Psilocarya nitens +  and Psilocarya rhynchosporoides +
Rhynchospora nitens +
Rhynchospora +
species +
sulcate +  and 2-edged +
flattened +, terete +, triangular +  and conic +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
plant +, solitary +  and cespitose +