Rhynchospora pallida

M. A. Curtis

Amer. J. Sci. Arts, ser. 2: 7: 409. 1849.

IllustratedEndemic
Basionym: Rhynchospora curtisii Steudel 1855
Synonyms: Phaeocephalum pallidum (M. A. Curtis) House
Treatment appears in FNA Volume 23. Treatment on page 238. Mentioned on page 207, 235.
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Plants perennial, cespitose, 40–100 cm, base bulbous; rhizomes stoloniferous, short, wiry. Culms erect or excurved, linear, leafy, trigonous, slender. Leaves slightly to much exceeded by culm; blades ascending, narrowly linear, proximally flat, 1–3 mm wide, apex trigonous, tapering gradually, setaceous. Inflorescences terminal; spikelet single, terminal cluster of spikelets crowded, hemispheric, 2.5 cm wide; leafy bracts linearsetaceous, much exceeding cluster. Spikelets whitish to tan, narrowly lanceoloid, (3.5–) 4–5.5 mm, apex acuminate; fertile scales lanceolate, 3.5–4 (–4.5) mm, apex narrowly acute, minutely awned or apiculate. Flowers: bristles vestigial or obsolete. Fruits 1 per spikelet, (1.9–) 2–2.3 mm; body brown with pale center, lenticular, broadly ellipsoid, 1.5–2 × 1.5 mm, margins flowing to tubercle; surfaces longitudinally finely striate; tubercle depressedtriangular, 0.2–0.3 (–0.4) mm.


Phenology: Fruiting late spring–fall.
Habitat: Sands and peats of clearings in pine flatwoods, barrens, and savannas
Elevation: 0–200 m

Distribution

V23 426-distribution-map.jpg

Del., Md., N.J., N.Y., N.C., S.C., Va.

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Rhynchospora pallida"
apiculate +  and awned +
acute;acuminate;setaceous;tapering;trigonous +
Robert Kral +
M. A. Curtis +
2-lobed +  and lunate +
Rhynchospora curtisii +
scabridulous +  and scabrid +
v--shaped +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
warty +, papillate +, alveolate +  and pitted +
ellipsoid +  and lenticular +
1.5 cm15 mm <br />0.015 m <br /> (?) +
ascending +  and appressed +
obsolete +  and vestigial +
parallel +  and divergent +
terete +, rolled +  and plicate +
trigonous +  and excurved +
slender +
Del. +, Md. +, N.J. +, N.Y. +, N.C. +, S.C. +  and Va. +
0–200 m +
distalmost +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
biconvex +  and trigonous +
Sands and peats of clearings in pine flatwoods, barrens, and savannas +
racemose +, corymbose +  and paniculate +
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 late spring–fall. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
Amer. J. Sci. Arts, ser. +
wiry +  and stoloniferous +
adventitious +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
basal +  and proximal +
lanceolate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
cylindric +
Illustrated +  and Endemic +
crowded +  and cluster +
whitish +  and tan +
lanceoloid;hemispheric +
0.4 cm4 mm <br />0.004 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
2 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
cleft +, 2-fid +  and undivided +
Phaeocephalum pallidum +
Rhynchospora pallida +
Rhynchospora +
species +
sulcate +  and 2-edged +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
flattened +, terete +, triangular +  and conic +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
plant +  and cespitose +