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 17:06, 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
![V23 238-distribution-map.jpg](/w/images/1/1f/V23_238-distribution-map.jpg)
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.