Difference between revisions of "Cyperus bipartitus"
Ann. Lyceum Nat. Hist. New York 3: 257. 1836.
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|common_names=Shining flatsedge | |common_names=Shining flatsedge | ||
+ | |special_status={{Treatment/ID/Special_status | ||
+ | |code=F | ||
+ | |label=Illustrated | ||
+ | }} | ||
|basionyms= | |basionyms= | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Cyperus rivularis | |name=Cyperus rivularis | ||
|authority=Kunth | |authority=Kunth | ||
+ | |rank=species | ||
}} | }} | ||
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Pycreus;Cyperus bipartitus | |hierarchy=Cyperaceae;Cyperus;Cyperus subg. Pycreus;Cyperus bipartitus | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Cyperus bipartitus | name=Cyperus bipartitus | ||
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|authority=Torrey | |authority=Torrey | ||
|rank=species | |rank=species | ||
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|publication title=Ann. Lyceum Nat. Hist. New York | |publication title=Ann. Lyceum Nat. Hist. New York | ||
|publication year=1836 | |publication year=1836 | ||
− | |special status= | + | |special status=Illustrated |
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_255.xml |
|genus=Cyperus | |genus=Cyperus | ||
|subgenus=Cyperus subg. Pycreus | |subgenus=Cyperus subg. Pycreus |
Latest revision as of 21:39, 5 November 2020
Herbs, annual, densely cespitose, with fibrous roots. Culms roundly trigonous, 3–25(–30) cm × 0.3–1.4 mm, glabrous. Leaves 1–3, V-shaped, 1–8 cm × 1–2 mm. Inflorescences: spike 1, loosely ovoid, compressed, 7–14 × 9–14 mm; rays 1–4, to 2(–3) cm; bracts 2–3, horizontal to ascending at 30(–45)°, V-shaped to flat, 1–12 cm × 0.5–1.5 mm. Spikelets 3–5(–8), flattened, oblong to oblong-lanceoloid, 8–18 × 2–2.6(–3) mm; floral scales (6–)10–26(–32), closely imbricate, laterally light to dark brown, medially light brown, laterally ribless, medially 2–3-ribbed, 2-keeled, oblong to ovate, 1.9–2.7 × 1.8–2.3 mm, apex obtuse. Flowers: stamens 2–3; anthers 0.4–0.5 mm, connective not prolonged; styles 0.6–1 mm; stigmas 1–1.5 mm. Achenes black, network of ridges forming isodiametric or square cells, sessile, obovoid to ovoid, 1–1.3(–1.5) × (0.6–)0.8 mm, apex apiculate, surfaces minutely punctate.
Phenology: Fruiting summer.
Habitat: Emergent shorelines, ditches, puddles, often in disturbed places
Elevation: 0–1500 m
Distribution
![V23 255-distribution-map.jpg](/w/images/5/54/V23_255-distribution-map.jpg)
Ont., Que., Ala., Ariz., Ark., Calif., Colo., Conn., Del., D.C., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Mexico, Central America, South America.
Discussion
Selected References
None.