Rhynchospora pleiantha

(Kükenthal) Gale

Rhodora 46: 171. 1944.

Illustrated
Basionym: Rhynchospora filifolia var. pleiantha Kükenthal Repert. Spec. Nov. Regni Veg. 23: 208. 1926
Treatment appears in FNA Volume 23. Treatment on page 233. Mentioned on page 206, 232.
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Plants perennial, densely cespitose, 10–40 (–53) cm; rhizomes stoloniferous, slender. Culms erect to excurved, leafybased, filiform. Leaves shorter than culm; blades ascending to excurved, filiform, proximally to 1 mm wide, margins involute, apex trigonous, subulate, tapering. Inflorescences: spikelet clusters 1–3, laterals 0–2, turbinate, rarely hemispheric; leafy bracts setaceous, overtopping inflorescence. Spikelets redbrown, narrowly lanceoloid, 5–7 mm, apex acute; fertile scales lanceolate, 3.5–5 mm, apex acute, mucronate. Flowers: perianth absent. Fruits 2 (–5) per spikelet, (1.7–) 2–2.2 mm; body on short, setulose receptacular stipe, brown with pale center, obovoidlenticular, 0.8–1.1 mm, surfaces very finely longitudinally lined, sometimes faintly reticulatecancellate; tubercle triangular-subulate, 0.7–0.9 mm, base lunate, edges setulose.


Phenology: Fruiting late spring–fall.
Habitat: Sands and peats of pond shores and moist pine savannas, particularly in karst districts
Elevation: 0–200 m

Distribution

V23 412-distribution-map.jpg

Ala., Fla., Ga., N.C., West Indies (Cuba)

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Rhynchospora pleiantha"
mucronate;acute;acute;tapering;subulate;trigonous +
Robert Kral +
(Kükenthal) Gale +
Rhynchospora filifolia var. pleiantha +
scabridulous +  and scabrid +
filiform +  and excurved +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
warty +, papillate +, alveolate +  and pitted +
ridged +, terete +, lenticular +  and flattened +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
2-ranked +  and arranged +
ascending +  and appressed +
setaceous +
parallel +  and divergent +
terete +, rolled +  and plicate +
filiform +  and excurved +
Ala. +, Fla. +, Ga. +, N.C. +  and West Indies (Cuba) +
0–200 m +
distalmost +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
biconvex +  and trigonous +
Sands and peats of pond shores and moist pine savannas, particularly in karst districts +
racemose +, corymbose +  and paniculate +
erect +, rarely +  and spreading +
3-ranked +  and polystichous +
cauline +  and basal +
keeled;terete;keeled;terete +
decurrent +
plumed +  and barbed +
deciduous +  and persistent +
shorter or longer +
of 2-12(-20) bristles +
Fruiting late spring–fall. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
stoloniferous +
adventitious +
basal +  and proximal +
lanceolate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cylindric +
Illustrated +
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 +
Dichromena +  and Psilocarya +
Rhynchospora pleiantha +
Rhynchospora +
species +
sulcate +  and 2-edged +
triangular-subulate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
40 cm400 mm <br />0.4 m <br /> (53 cm530 mm <br />0.53 m <br />) +
plant +  and cespitose +