Rhynchospora inexpansa

(Michaux) Vahl

Enum. Pl. 2: 232. 1805.

IllustratedEndemic
Basionym: Schoenus inexpansus Michaux Fl. Bor.-Amer. 1: 35. 1803
Treatment appears in FNA Volume 23. Treatment on page 222. Mentioned on page 204.
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Plants perennial, cespitose, 30–120 cm; rhizomes absent. Culms arching, leafy, droopingtipped, ± terete, ribbed, slender. Principal leaves exceeded by culm; blades spreading to ascending, narrowly linear, proximally flat, 2–3.5 mm wide, apex trigonous, tapering. Inflorescences: clusters of spikelets 3–6, progressively wider-spaced proximally, narrow, elongate; leafy bracts slender, mostly exceeding clusters. Spikelets redbrown, lanceoloid, 5–7 mm, apex acuminate; fertile scales narrowly ovate, 4–5 mm, apex acuminate, midrib included or shortexcurrent. Flowers: perianth bristles 6, exceeding tubercle, antrorsely barbellate. Fruits (1–) 2–3 (–4) per spikelet, 3–3.2 mm; body brown, narrowly oblongellipsoid, flattened, 2 × 0.8–1 mm; surface strongly transversely wavyrugose, vertically finely striate between ridges; tubercle compressed, narrowly triangularsubulate, 1 mm.


Phenology: Fruiting summer–fall.
Habitat: Sands, peats, clays, and silts of moist meadows, shores of ponds, flatwoods, disturbed low areas
Elevation: 0–300 m

Distribution

V23 387-distribution-map.jpg

Ala., Ark., Fla., Ga., La., Miss., N.C., S.C., Tex., Va.

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Rhynchospora inexpansa"
acuminate;acuminate;tapering;trigonous +
Robert Kral +
(Michaux) Vahl +
2-lobed +  and lunate +
Schoenus inexpansus +
scabridulous +  and scabrid +
v--shaped +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
2 cm20 mm <br />0.02 m <br /> (?) +
warty +, papillate +, alveolate +  and pitted +
flattened +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
ascending +  and appressed +
slender +
parallel +  and divergent +
terete +, rolled +  and plicate +
slender +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, S.C. +, Tex. +  and Va. +
0–300 m +
distalmost +
0.3 cm3 mm <br />0.003 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
biconvex +  and trigonous +
Sands, peats, clays, and silts of moist meadows, shores of ponds, flatwoods, disturbed low areas +
wider-spaced +  and cluster +
erect +, rarely +  and spreading +
3-ranked +  and polystichous +
cauline +  and basal +
keeled;terete;keeled;terete +
revolute +  and involute +
shortexcurrent +  and included +
decurrent +
plumed +  and barbed +
deciduous +  and persistent +
shorter or longer +
of 2-12(-20) bristles +
Fruiting summer–fall. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
adventitious +
basal +  and proximal +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cylindric +
Illustrated +  and Endemic +
lanceoloid +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
2 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
cleft +, 2-fid +  and undivided +
wavyrugose +
Dichromena +  and Psilocarya +
Rhynchospora inexpansa +
Rhynchospora +
species +
sulcate +  and 2-edged +
compressed +
1 cm10 mm <br />0.01 m <br /> (?) +
plant +  and cespitose +