Rhynchospora curtissii

Britton in J. K. Small

in J. K. Small, Fl. S.E. U.S., 195, 1327. 1903.

IllustratedEndemic
Synonyms: Phaeocephalum curtissii (Britton) House Rhynchospora filifolia var. ellipsoidea Kükenthal
Treatment appears in FNA Volume 23. Treatment on page 234. Mentioned on page 232, 238.
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Plants perennial, densely cespitose, 10–30 cm; rhizomes absent. Culms lax, erect to excurved, leafy toward base, filiform. Leaves overtopped by scape; blades filiform, distally flattened, channeled, tapering, to 1 mm wide, margins strongly involute, apex blunt. Inflorescences: spikelet clusters 1–3, laterals widely spaced, all narrowly turbinate, ellipsoid, or ovoid; leafy bracts setaceous, overtopping proximal clusters, often overtopped by terminal ones. Spikelets erect or ascending, redbrown, lanciform, mostly 4.5–5 mm, apex acute; fertile scales lanceolate, (3–) 4–4.5 mm, apex acute, apiculate. Flowers: perianth absent. Fruits 2–3 (–5) per spikelet; stipe and receptacle 0.1–0.2 (–0.3) mm, setose; body brown with pale glassy center, narrowly obovoidellipsoid, lenticular, 1.2–1.5 mm, margins narrow, flowing to tubercle; surfaces very finely lined longitudinally, transversely with wavy lines of tiny pits; tubercle narrowly triangular or slightly concavesided, flattened, 0.7–1.2 (–1.5) mm.


Phenology: Fruiting summer–fall.
Habitat: Sands and peats of bogs, pineland pond shores, seeps, and low moist savannas
Elevation: 0–100 m

Discussion

Selected References

None.

Lower Taxa

None.

"wider" is not a number.

... more about "Rhynchospora curtissii"
Robert Kral +
Britton in J. K. Small +
shortened +
2-lobed +  and lunate +
scabridulous +  and scabrid +
tapering +, channeled +, flattened +  and filiform +
0mm;1mm +
warty +, papillate +, alveolate +  and pitted +
lenticular +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
ascending +  and appressed +
setaceous +
parallel +  and divergent +
terete +, rolled +  and plicate +
filiform +  and excurved +
Ala. +, Fla. +  and Miss. +
0–100 m +
distalmost +
biconvex +  and trigonous +
Sands and peats of bogs, pineland pond shores, seeps, and low moist savannas +
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 summer–fall. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
in J. K. Small, Fl. S.E. U.S., +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
adventitious +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
basal +  and proximal +
lanceolate +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
cylindric +
Illustrated +  and Endemic +
lanciform +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (?) +  and 0.02 cm0.2 mm <br />2.0e-4 m <br /> (?) +
cleft +, 2-fid +  and undivided +
Phaeocephalum curtissii +  and Rhynchospora filifolia var. ellipsoidea +
Rhynchospora curtissii +
Rhynchospora +
species +
sulcate +  and 2-edged +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
flattened +, slightly +  and triangular +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
plant +  and cespitose +