Rhynchospora harveyi var. culixa

(Gale) Kral

Novon 9: 206. 1999.

IllustratedEndemicConservation concern
Basionym: Rhynchospora culixa Gale Rhodora 46: 235, plate 828, figs. 3A, B. 1944
Synonyms: Rhynchospora grayi var. culixa (Gale) Kükenthal
Treatment appears in FNA Volume 23. Treatment on page 232. Mentioned on page 230, 231.
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Plants perennial, cespitose, to 70–80 cm. Culms mostly excurved, slender. Inflorescences: spikelet clusters mostly loose, branching lax, ascending to arching, ultimate branches with few spikelets; leafy bracts setaceoustipped, these and bractlets exceeding proximal clusters, exceeded by distal. Spikelets prevalently lanceoloid, 3–4 mm, apex acute or acuminate; fertile scales ovate, 2.5–3.5 mm, apex acute, mostly mucronate. Flowers: perianth bristles 6, short, reaching at most to fruit midbody, antrorsely barbellate. Fruits 1 (–2) per spikelet, 2–2.2 mm; body brown or redbrown, obovoid, lenticular, 1.5–1.6 mm; surfaces with numerous, wavy lines of tiny pitlike, short-rectangular, vertical alveolae, separated by numerous, transverse, undulate, low, broad ridges; tubercle with narrow buttress, lowconic, 3–5 mm.


Phenology: Fruiting spring–summer.
Habitat: Sands and peats of savannas, mostly rises in bogs in pinelands or sandhill bog ecotones
Elevation: 0–200 m

Discussion

Of conservation concern.

Variety culixa is distinguished from var. harveyi by a lower, more slender habit, by sparser inflorescences, the terminal cluster overtopping subtending leafy bract, and by the comparatively flatter fruit. Its fruit body surfaces have broader, low, smooth, and pale transverse ridges.

Selected References

None.

Lower Taxa

None.

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

short-rectangular +  and pitlike +
mucronate;acute;acuminate;acute +
Robert Kral +
(Gale) Kral +
2-lobed +  and lunate +
Rhynchospora culixa +
scabridulous +  and scabrid +
subulate +  and trigonous +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
redbrown +  and brown +
lenticular +  and obovoid +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
ascending +  and appressed +
spreading +  and erect +
parallel +  and divergent +
terete +, rolled +  and plicate +
excurved +
slender +
Fla. +  and Ga. +
0–200 m +
distalmost +
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 savannas, mostly rises in bogs in pinelands or sandhill bog ecotones +
racemose +, corymbose +  and paniculate +
erect +, rarely +  and spreading +
spreading;ascending +
cauline +  and basal +
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 (?) +
undulate +
adventitious +
basal +  and proximal +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
cylindric +
Illustrated +, Endemic +  and Conservation concern +
brown +  and light-redbrown +
lanceoloid +
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 +
Rhynchospora grayi var. culixa +
Rhynchospora harveyi var. culixa +
Rhynchospora harveyi +
variety +
sulcate +  and 2-edged +
flattened +, terete +, triangular +  and conic +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
plant +  and cespitose +