Isolepis carinata

Hooker & Arnott ex Torrey

Ann. Lyceum Nat. Hist. New York 3: 349. 1836.

IllustratedEndemic
Basionym: Scirpus carinatus (Hooker & Arnott ex Torrey) A. Gray 1868
Synonyms: Isolepis koilolepis Steudel Scirpus koilolepis (Steudel) Gleason
Treatment appears in FNA Volume 23. Treatment on page 138. Mentioned on page 139.

Plants annual; rhizomes absent. Culms 1–25 cm × 0.2–0.3 mm. Leaves: sheaths green to stramineous or brown; distal blade mostly much longer than sheath, to 5 cm × 0.2–0.5 mm. Inflorescences: involucral-bract 1, 5–25 (–33) mm. Spikelets 1–10 × 1.5–2 mm; scales stramineous to pale orangish, midrib region often greenish, markedly gibbous, prominently to obscurely veined, midrib keeled, finely reticulate at 20X, membranous, hyaline, apex rounded, awned; proximal scale to 2.5 (–5) mm, awn to 2 mm; other scales 1.8–2 × 1–1.2 mm, awn 0.2–0.5 mm. Flowers: anthers 0.2 mm; styles 3-fid. Achenes often falling with and clasped by floral scales, dark orangebrown or often whitish, broadly ellipsoid to obovoid or outline subcircular, nearly equilaterally trigonous, faces concave, 1–1.5 × 0.7–1 mm, papillose at 10–15X, papillae in many vertical rows, often obscured by thin, minutely reticulate, whitish surface layer.


Phenology: Fruiting spring.
Habitat: Wet, often drying, freshwater places in grasslands, rock barrens, open woods, lawns, cultivated fields, waste places
Elevation: 0–800 m

Distribution

V23 219-distribution-map.jpg

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

Discussion

Isolepis carinata sometimes occurs in mixed populations with the very similar I. pseudosetacea.

Selected References

None.

Lower Taxa

None.
... more about "Isolepis carinata"
whitish +  and dark orangebrown +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
papillose +
concave;outline subcircular , nearly equilaterally trigonous , faces;broadly ellipsoid;obovoid +
0.7mm;1mm +
0.2 cm2 mm <br />0.002 m <br /> (?) +
S. Galen Smith +
Hooker & Arnott ex Torrey +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
shortened +
persistent +
enlarged +
Scirpus carinatus +
rudimentary +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
1 cm10 mm <br />0.01 m <br /> (25 cm250 mm <br />0.25 m <br />) +
0.2mm;0.3mm +
0 cm0 mm <br />0 m <br /> (5 cm50 mm <br />0.05 m <br />) +
mostly much longer +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Ala. +, Ark. +, Calif. +, Fla. +, Ga. +, Ill. +, Kans. +, Ky. +, La. +, Miss. +, Mo. +, N.C. +, Okla. +, S.C. +, Tenn. +  and Tex. +
0–800 m +
hypogynous +  and subtending +
biconvex +  and trigonous +
Wet, often drying, freshwater places in grasslands, rock barrens, open woods, lawns, cultivated fields, waste places +
solitary +  and capitate +
2.5 cm25 mm <br />0.025 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
spreading +  and erect +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
cauline +  and basal +
membranous +
with (1-)3-6(-30) bristles and/or scales +
Fruiting spring. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0 cm0 mm <br />0 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Ann. Lyceum Nat. Hist. New York +
adventitious +
stramineous +  and pale orangish +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
basal +  and proximal +
2-keeled +
1mm;1.2mm +
cylindric +
Illustrated +  and Endemic +
0.1 cm1 mm <br />0.001 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1.5mm;2mm +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
Isolepis koilolepis +  and Scirpus koilolepis +
Isolepis carinata +
Isolepis +
species +
not +  and rhizomatous +