Difference between revisions of "Cyperus eragrostis"
in J. Lamarck and J. Poiret, Tabl. Encycl. 1: 146. 1791.
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|elevation=0–200 m | |elevation=0–200 m | ||
|distribution=B.C.;Ala.;Calif.;La.;Miss.;N.J.;Oreg.;Pa.;S.C.;Tex.;Wash.;South America;naturalized;Europe. | |distribution=B.C.;Ala.;Calif.;La.;Miss.;N.J.;Oreg.;Pa.;S.C.;Tex.;Wash.;South America;naturalized;Europe. | ||
| − | |discussion=<p>The distributions of Cyperus eragrostis in British Columbia, Alabama, Pennsylvania, South Carolina, and Texas represent introduced populations.</p> | + | |discussion=<p>The distributions of <i>Cyperus eragrostis</i> in British Columbia, Alabama, Pennsylvania, South Carolina, and Texas represent introduced populations.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1791 | |publication year=1791 | ||
|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_238.xml |
|genus=Cyperus | |genus=Cyperus | ||
|subgenus=Cyperus subg. Pycnostachys | |subgenus=Cyperus subg. Pycnostachys | ||
Revision as of 16:06, 18 September 2019
Herbs, perennial, cespitose, rhizomatous. Culms trigonous to terete, (25–)40–60(–90) cm, glabrous. Leaves flat or V-shaped, (10–)25–50 cm × 5–8(–12) mm. Inflorescences: heads globose, (10–)20–40 mm diam.; rays (0–)3–10, 2.5–5(–12) cm; 2d order rays usually absent (when present, 0.5–1.5 cm); bracts 4–8, horizontal to ascending at 15–30°, flat (or V-shaped), 3–30(–50) cm × 1.5–8(–12) mm. Spikelets (20–)30–50(–70), oblong, compressed, 5–20 × 2.2–3 mm; floral scales (12–)20–30(–50), off-white to golden brown, basally 2-keeled, laterally ribless, ovate-deltate, 2–2.3 × 1–1.4 mm (declined 30–40º from rachilla). Flowers: stamen 1; anthers 1–1.2 mm; styles 1–1.2 mm; stigmas 0.5 mm. Achenes black or dark brown, stipitate, broadly ellipsoid, 1.2–1.4 × 0.5–0.6 mm, stipe to 0.1 mm, apex apiculate, beak 0.2–0.3 mm, surfaces puncticulate.
Phenology: Fruiting summer.
Habitat: Damp grasslands, roadsides ditches
Elevation: 0–200 m
Distribution
B.C., Ala., Calif., La., Miss., N.J., Oreg., Pa., S.C., Tex., Wash., South America, naturalized, Europe.
Discussion
The distributions of Cyperus eragrostis in British Columbia, Alabama, Pennsylvania, South Carolina, and Texas represent introduced populations.
Selected References
None.