Difference between revisions of "Cyperus alopecuroides"
Descr. Pl. Rar., 20. 1772.
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|elevation=0–30 m | |elevation=0–30 m | ||
|distribution=Fla.;West Indies;Asia;Africa;Australia. | |distribution=Fla.;West Indies;Asia;Africa;Australia. | ||
| − | |discussion=<p>Cyperus alopecuroides has been introduced in Polk County, Florida.</p><!-- | + | |discussion=<p><i>Cyperus alopecuroides</i> has been introduced in Polk County, Florida.</p><!-- |
| − | --><p>Plants of Cyperus alopecuroides might be confused with C. digitatus; large size and the biconvex achenes with two stigmas characterize C. alopecuroides.</p> | + | --><p>Plants of <i>Cyperus alopecuroides</i> might be confused with <i>C. digitatus</i>; large size and the biconvex achenes with two stigmas characterize <i>C. alopecuroides</i>.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1772 | |publication year=1772 | ||
|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_289.xml |
|genus=Cyperus | |genus=Cyperus | ||
|subgenus=Cyperus subg. Cyperus | |subgenus=Cyperus subg. Cyperus | ||
Revision as of 16:06, 18 September 2019
Herbs, perennial, rhizomatous, coarse. Culms trigonous, 150–250 cm × 2–15 mm, glabrous. Leaves inversely W-shaped, 30–150 cm × 6–22 mm. Inflorescences: spikes 1–4, cylindric, 1.5–4 cm × 7–15 mm; rays 3–9, 10–26 cm; 2d order rays 2–11 cm; 3d order rays 1–4 cm (or absent); bracts 3–5, ± horizontal, 20–100 cm × 3–15 mm; 2d order bracts 2–7 cm × 2–7 mm; 3d order bracts 2–5 cm × 2–4 mm (or absent); rachilla persistent, wingless or wing hyaline, narrow, 0.1 mm wide. Spikelets 50–100, linear, ± quadrangular, slightly compressed, 8–11 × 0.9–1.2 mm; floral scales 15–30, marginally clear, laterally reddish along midrib, medially green, laterally 3–4 ribbed, medially 3–5-ribbed, ovate, 1–2–1.6 × 1.1–1.3 mm, apex mucronulate. Flowers: anthers 2, 0.4–0.5 mm; styles 0.8–1 mm; stigmas 2, 0.4 mm. Achenes dark brown, sessile, ellipsoid to obovoid, 0.9 × 0.4–0.5 mm, surfaces finely puncticulate.
Phenology: Fruiting summer.
Habitat: Pond shores, stream banks
Elevation: 0–30 m
Distribution
Fla., West Indies, Asia, Africa, Australia.
Discussion
Cyperus alopecuroides has been introduced in Polk County, Florida.
Plants of Cyperus alopecuroides might be confused with C. digitatus; large size and the biconvex achenes with two stigmas characterize C. alopecuroides.
Selected References
None.