Rhynchospora harveyi var. harveyi

IllustratedEndemic
Synonyms: Phaeocephalum earlei (Britton) House Phaeocephalum plankii (Britton) House Rhynchospora plankii Britton
Treatment appears in FNA Volume 23. Treatment on page 231. Mentioned on page 230, 232.
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Plants perennial, cespitose, 70–110 cm. Culms erect to excurved, slender, often stiffish. Inflorescences: spikelet clusters mostly dense, branches spreading to erect, stiffish; subtending leafy bracts and bractlets, mostly exceeding clusters. Spikelets prevalently ovoid to broadly ellipsoid, 3–4 mm, apex acute; fertile scales broadly ovate to obovate or suborbiculate, sometimes cupulate, 2.5–3.5 mm, apex acute to rounded or emarginate, often mucronate. Flowers: perianth bristles 6, reaching at most to fruit midbody. Fruits 1 (–2) per spikelet, 2–2.4 mm; body usually deep brown, lustrous, tumidly obovoid to suborbicular, 1.5–1.7 mm, with many fine, undulate lines of minute, isodiametric to short-rectangular pits or very finely reticulate, appearing nearly smooth; tubercle distinctly buttressed, lowconic 0.3–0.5 (–0.7) mm.


Phenology: Fruiting spring–summer.
Habitat: Sands or sandy clays in open areas in pinelands, flatwoods, savannas, and prairies, often in dry or seasonally dry places
Elevation: 0–400 m

Distribution

V23 409-distribution-map.jpg

Ala., Ark., Fla., Ga., Kans., La., Miss., Mo., N.C., Okla., S.C., Tenn., Tex., Va.

Discussion

Selected References

None.

Lower Taxa

None.

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

mucronate;acute;rounded or emarginate +
Robert Kral +
W. Boott +
2-lobed +  and lunate +
scabridulous +  and scabrid +
subulate +  and trigonous +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
isodiametric +  and short-rectangular +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
ascending +  and appressed +
spreading +  and erect +
parallel +  and divergent +
terete +, rolled +  and plicate +
excurved +
slender +
Ala. +, Ark. +, Fla. +, Ga. +, Kans. +, La. +, Miss. +, Mo. +, N.C. +, Okla. +, S.C. +, Tenn. +, Tex. +  and Va. +
0–400 m +
distalmost +
0.2 cm2 mm <br />0.002 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
biconvex +  and trigonous +
Sands or sandy clays in open areas in pinelands, flatwoods, savannas, and prairies, often in dry or seasonally dry places +
erect +, rarely +  and spreading +
spreading;ascending +
cauline +  and basal +
undulate +
keeled;terete;keeled;terete +
revolute +  and involute +
exserted +  and included +
decurrent +
plumed +  and barbed +
deciduous +  and persistent +
shorter or longer +
of 2-12(-20) bristles +
Fruiting spring–summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
adventitious +
basal +  and proximal +
cupulate;broadly ovate;obovate or suborbiculate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
cylindric +
Illustrated +  and Endemic +
brown +  and light-redbrown +
many +, 1 +  and 4 +
prevalently ovoid;broadly ellipsoid +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
2 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
cleft +, 2-fid +  and undivided +
Phaeocephalum earlei +, Phaeocephalum plankii +  and Rhynchospora plankii +
Rhynchospora harveyi var. harveyi +
Rhynchospora harveyi +
variety +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
flattened +, terete +, triangular +  and conic +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
plant +  and cespitose +