Difference between revisions of "Rhynchospora corniculata"
Ann. Lyceum Nat. Hist. New York 3: 205. 1835.
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|name=Ceratoschoenus corniculatus | |name=Ceratoschoenus corniculatus | ||
|authority=(Lamarck) Nees | |authority=(Lamarck) Nees | ||
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|name=Ceratoschoenus longirostris | |name=Ceratoschoenus longirostris | ||
|authority=(Michaux) A. Gray | |authority=(Michaux) A. Gray | ||
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|name=Rhynchospora corniculata var. interior | |name=Rhynchospora corniculata var. interior | ||
|authority=Fernald | |authority=Fernald | ||
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|name=Schoenus longirostris | |name=Schoenus longirostris | ||
|authority=unknown | |authority=unknown | ||
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|elevation=0–400 m | |elevation=0–400 m | ||
|distribution=Ala.;Ark.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;La.;Md.;Miss.;Mo.;N.C.;Okla.;S.C.;Tenn.;Tex.;Va. | |distribution=Ala.;Ark.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;La.;Md.;Miss.;Mo.;N.C.;Okla.;S.C.;Tenn.;Tex.;Va. | ||
| − | |discussion=<p>Specimens of Rhyncospora corniculata with base of the tubercle fully as wide as the fruit and with fruit bodies at the lower length range were treated by M. L. Fernald as R. corniculata var. interior Fernald.</p><!-- | + | |discussion=<p>Specimens of Rhyncospora corniculata with base of the tubercle fully as wide as the fruit and with fruit bodies at the lower length range were treated by M. L. Fernald as <i>R. corniculata</i> <i></i>var.<i> interior</i> Fernald.</p><!-- |
| − | --><p>The percent of fruit with crimped margins in Rhynchospora corniculata increases westward in the Gulf coastal plain; toward Mexico it is sympatric with R. indianolensis and R. gigantea, which also have crimped fruit.</p> | + | --><p>The percent of fruit with crimped margins in <i>Rhynchospora corniculata</i> increases westward in the Gulf coastal plain; toward Mexico it is sympatric with <i>R. indianolensis</i> and R. gigantea, which also have crimped fruit.</p> |
|tables= | |tables= | ||
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|publication year=1835 | |publication year=1835 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V23/V23_360.xml |
|genus=Rhynchospora | |genus=Rhynchospora | ||
|species=Rhynchospora corniculata | |species=Rhynchospora corniculata | ||
Revision as of 16:07, 18 September 2019
Illustrator:
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Plants perennial, cespitose, 100–150(–200) cm, coarse; rhizomes absent. Culms stiffly erect, leafy, triangular, multiribbed; principal leaves overtopped by culm; blades flat, 3–20 mm wide, apex attenuate, trigonous. Inflorescences terminal and axillary, diffuse clusters of corymbs, fascicles turbinate to hemispheric; bracts often overtopping clusters. Spikelets few to several per cluster, brown or reddish brown, lanceoloid, 10–15 mm, apex narrowly acute; fertile scales broadly lanceolate, (7.5–)10–13(–14) mm, apex acute, midrib shortexcurrent or not. Flowers: perianth bristles 5–6, longest reaching to or slightly beyond fruit midbody, antrorsely barbellate. Fruits 1(–2) per spikelet, 13–20(–25) mm; body oblongellipsoid, compressed, 4–5(–6) × 2–3 mm, base narrowed, short, margins thickened, often crimped, surfaces concave, striate, minutely cancellate or pebbled; tubercle subulate, 2-grooved, 10–15(–20) mm, scabridulous. 2n = 18.
Phenology: Fruiting summer–fall.
Habitat: Swamps, marshes, and shallows, mostly in basic to circumneutral, silty or muddy open sites
Elevation: 0–400 m
Distribution
Ala., Ark., Del., Fla., Ga., Ill., Ind., Ky., La., Md., Miss., Mo., N.C., Okla., S.C., Tenn., Tex., Va.
Discussion
Specimens of Rhyncospora corniculata with base of the tubercle fully as wide as the fruit and with fruit bodies at the lower length range were treated by M. L. Fernald as R. corniculata var. interior Fernald.
The percent of fruit with crimped margins in Rhynchospora corniculata increases westward in the Gulf coastal plain; toward Mexico it is sympatric with R. indianolensis and R. gigantea, which also have crimped fruit.
Selected References
None.