Difference between revisions of "Cyperus fuscus"
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|elevation=0–1700 m | |elevation=0–1700 m | ||
|distribution=Ont.;Que.;Calif.;Conn.;Md.;Mass.;Mo.;Nebr.;Nev.;N.J.;Pa.;S.Dak.;Va.;Eurasia. | |distribution=Ont.;Que.;Calif.;Conn.;Md.;Mass.;Mo.;Nebr.;Nev.;N.J.;Pa.;S.Dak.;Va.;Eurasia. | ||
| − | |discussion=<p>A native of temperate Eurasia, Cyperus fuscus is intermittently adventive and locally established 35°–45° N latitude. The report from New York (M. L. Fernald 1950) is based on a misidentification of C. diandrus (R. S. Mitchell and G. C. Tucker 1997).</p> | + | |discussion=<p>A native of temperate Eurasia, <i>Cyperus fuscus</i> is intermittently adventive and locally established 35°–45° N latitude. The report from New York (M. L. Fernald 1950) is based on a misidentification of <i>C. diandrus</i> (R. S. Mitchell and G. C. Tucker 1997).</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1753 | |publication year=1753 | ||
|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_244.xml |
|genus=Cyperus | |genus=Cyperus | ||
|subgenus=Cyperus subg. Pycnostachys | |subgenus=Cyperus subg. Pycnostachys | ||
Revision as of 16:06, 18 September 2019
Herbs, annual, cespitose. Culms trigonous, 2–30 cm × 0.6–1.1 mm, glabrous. Leaves flat, 4–10 cm × 2–4 mm. Inflorescences: rays 1–3, 0.2–1.5 cm; 2d order rays present in robust plants, to 5 mm; bracts 2–3, longest erect, others spreading, 1–20 cm × 1.5–3 mm. Spikelets 3–12, narrowly ellipsoid, flattened, 3–7 × 0.9–1.2 mm; floral scales 8–12(–16), laterally purplish brown, medially greenish yellow, 3-ribbed medially, orbiculate, 0.9–1.1 × 1 mm, apex mucronate. Flowers: stamen 1; anthers ellipsoid, 0.2 mm, connective not prolonged; styles 0.3–0.4 mm; stigmas 0.3 mm. Achenes light brown, ellipsoid, 0.7–0.9 × 0.4 mm, base barely stipelike to narrowly cuneate, apex acute, surfaces glabrous.
Phenology: Fruiting summer.
Habitat: Damp, disturbed soils, emergent shorelines, puddles
Elevation: 0–1700 m
Distribution
Ont., Que., Calif., Conn., Md., Mass., Mo., Nebr., Nev., N.J., Pa., S.Dak., Va., Eurasia.
Discussion
A native of temperate Eurasia, Cyperus fuscus is intermittently adventive and locally established 35°–45° N latitude. The report from New York (M. L. Fernald 1950) is based on a misidentification of C. diandrus (R. S. Mitchell and G. C. Tucker 1997).
Selected References
None.