View source for Cyperus squarrosus

{{Treatment/ID
|accepted_name=Cyperus squarrosus
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Cent. Pl. II,
|place=6. 1756
|year=1756
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Chlorocyperus inflexus
|authority=(Muhlenberg) Palla
}} {{Treatment/ID/Synonym
|name=Cyperus aristatus
|authority=Rottbøll
}} {{Treatment/ID/Synonym
|name=Cyperus aristatus var. inflexus
|authority=(Muhlenberg) Kükenthal
}} {{Treatment/ID/Synonym
|name=Cyperus aristatus var. runyonii
|authority=O’Neill
}} {{Treatment/ID/Synonym
|name=Cyperus inflexus
|authority=(Linnaeus) C. B. Clarke
}} {{Treatment/ID/Synonym
|name=Dichostylis aristata
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Mariscus squarrosus
|authority=unknown
}}
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Cyperus;Cyperus squarrosus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Cyperus]]</div><div class="higher-taxon"><small>subgenus</small>[[Cyperus subg. Cyperus]]</div><div class="higher-taxon"><small>species</small>[[Cyperus squarrosus]]</div></div>
|volume=Volume 23
|mention_page=page 144, 145, 166
|treatment_page=page 165
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual, cespitose, with fibrous roots. <b>Culms</b> 1–20, trigonous, 2–16 cm × 0.5–0.8 mm, glabrous. <b>Leaves</b> 1–3, flat to V-shaped, (1–)5–10(–15) × 0.5–2.5 mm. <b>Inflorescences</b>: spike 1, loosely to densely ovoid to oblong, 6–20(–40) × 9–15(–20) mm; rays absent or 1–3(–6), 4–40 mm; bracts (1–)2–4, longest ± erect, V-shaped, 1–15 cm × 0.5–3 mm; rachilla ± deciduous, wingless. <b>Spikelets</b> (2–)6–20(–40), greenish to reddish brown, somewhat compressed, ovoid-lanceoloid to oblong, 2.5–10(–20) × 1.3–2.2 mm (excluding awns); floral scales deciduous, (4–)10–20(–34), greenish to stramineous or brownish red laterally, greenish medially, (5–)7–9(–11)-ribbed nearly to margins, oblong-lanceolate, (1.2–)1.3–1.8(–2.2) × (0.5–)0.7–0.8(–1) mm, apex cuspidate, excurved awn additional 0.5–1(–1.3) mm. <b>Flowers</b>: stamen 1, filaments 1.5 mm; anthers oblong, 0.2–0.3 mm, connective apex reddish, minute; styles 0.3–0.5 mm; stigmas 0.4–0.7 mm. <b>Achenes</b> light brown to nearly black, stipitate, obovoid (occasionally linear-spatulate or linear oblong, infrequently constricted in middle), 0.7–0.8(–1.1) × (0.2–)0.3–0.4(–0.5) mm, stipe 0.05–0.1 × 0.1 mm, apex truncate, apiculate, surfaces papillose.</span><!--

-->{{Treatment/Body
|phenology=Fruiting summer.
|habitat=Moist, disturbed soils, gravelly roadsides, flood plains, edges of puddles, muddy places
|elevation=0–2500 m
|distribution=Alta.;B.C.;Man.;N.B.;Ont.;Que.;Ala.;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;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.;Wyo.;Mexico;West Indies;Bermuda;Central America;South America;Eurasia;Africa;Atlantic Islands;Indian Ocean Islands;Pacific Islands;Australia.
|discussion=<p><i>Cyperus squarrosus</i> can be recognized by its small size and annual habit combined with its oblong-lanceolate floral scales bearing five to eleven conspicuous ribs and excurved awns. Some collections have been misidentified as <i>C. acuminatus</i>, an annual species of subg. Pycnostachys that has ovate-lanceolate, three-ribbed floral scales and digitately clustered spikelets.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cyperus squarrosus
|author=
|authority=Linnaeus
|rank=species
|parent rank=subgenus
|synonyms=Chlorocyperus inflexus;Cyperus aristatus;Cyperus aristatus var. inflexus;Cyperus aristatus var. runyonii;Cyperus inflexus;Dichostylis aristata;Mariscus squarrosus
|basionyms=
|family=Cyperaceae
|phenology=Fruiting summer.
|habitat=Moist, disturbed soils, gravelly roadsides, flood plains, edges of puddles, muddy places
|elevation=0–2500 m
|distribution=Alta.;B.C.;Man.;N.B.;Ont.;Que.;Ala.;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;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.;Wyo.;Mexico;West Indies;Bermuda;Central America;South America;Eurasia;Africa;Atlantic Islands;Indian Ocean Islands;Pacific Islands;Australia.
|reference=None
|publication title=Cent. Pl. II,
|publication year=1756
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V23/V23_265.xml
|genus=Cyperus
|subgenus=Cyperus subg. Cyperus
|species=Cyperus squarrosus
}}<!--

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