Difference between revisions of "Cyperus acuminatus"
Ann. Lyceum Nat. Hist. New York 3: 435. 1836.
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|habitat=Wet, often sandy shores and damp, disturbed soils | |habitat=Wet, often sandy shores and damp, disturbed soils | ||
|elevation=0–1500 m | |elevation=0–1500 m | ||
| − | |distribution=Ala.;Ariz.;Ark.;Calif.;Colo.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.H. | + | |distribution=Ala.;Ariz.;Ark.;Calif.;Colo.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.H.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa. (introduced?);S.Dak.;Tenn.;Tex.;Utah;Va.;Wash.;Wyo.;Mexico (Coahuila;Tamaulipas). |
| + | |discussion=<p><i>Cyperus acuminatus</i> may be introduced in New Hampshire and New York.</p> | ||
|tables= | |tables= | ||
|references= | |references= | ||
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|habitat=Wet, often sandy shores and damp, disturbed soils | |habitat=Wet, often sandy shores and damp, disturbed soils | ||
|elevation=0–1500 m | |elevation=0–1500 m | ||
| − | |distribution=Ala.;Ariz.;Ark.;Calif.;Colo.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.H. | + | |distribution=Ala.;Ariz.;Ark.;Calif.;Colo.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.H.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa. (introduced?);S.Dak.;Tenn.;Tex.;Utah;Va.;Wash.;Wyo.;Mexico (Coahuila;Tamaulipas). |
|reference=None | |reference=None | ||
|publication title=Ann. Lyceum Nat. Hist. New York | |publication title=Ann. Lyceum Nat. Hist. New York | ||
|publication year=1836 | |publication year=1836 | ||
|special status=Illustrated | |special status=Illustrated | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_233.xml |
|genus=Cyperus | |genus=Cyperus | ||
|subgenus=Cyperus subg. Pycnostachys | |subgenus=Cyperus subg. Pycnostachys | ||
Latest revision as of 20:39, 5 November 2020
Herbs, annual, cespitose. Culms roundly trigonous, (10–)20–30(–45) cm × 0.4–1.2 mm, distal 1/2 glabrous or infrequently scabridulous. Leaves 2–6(–8), V-shaped or flat, 8–12(–16) cm × 1–2(–4) mm. Inflorescences: heads hemispheric, 7–12(–15) mm diam.; rays 1–3(–5), 0.5–2 cm; bracts 3–6, longest erect to ascending, flat to V-shaped, (1.5–)3–12(–25) cm × 1–2.5(–3.5) mm. Spikelets (15–)25–50(–75), ovoid, compressed, 4–7 × 2–3 mm; floral scales 8–20(–35), laterally yellowish, yellowish green, or light reddish brown, medially light brown or greenish brown, 2-keeled, subtly 1-ribbed, ovate-lanceolate, 1–2 × 1–1.4 mm, apex acute, mucronate, straight to excurved, glabrous or sparsely scabridulous. Flowers: stamen 1; anthers 0.5 mm; styles 0.8–1.1 mm; stigmas 0.5 mm. Achenes brown, stipitate, broadly ellipsoid, abruptly contracted to base, 0.8–1.1 × 0.3–0.4 mm, stipe 0.1 mm, apex acute, tapering to slender beak formed of persistent style base, surfaces papillose.
Phenology: Fruiting summer–fall (Jul–Oct).
Habitat: Wet, often sandy shores and damp, disturbed soils
Elevation: 0–1500 m
Distribution
Ala., Ariz., Ark., Calif., Colo., Ill., Ind., Iowa, Kans., Ky., La., Mich., Minn., Mo., Mont., Nebr., N.H., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa. (introduced?), S.Dak., Tenn., Tex., Utah, Va., Wash., Wyo., Mexico (Coahuila, Tamaulipas).
Discussion
Cyperus acuminatus may be introduced in New Hampshire and New York.
Selected References
None.