View source for Cyperus virens

{{Treatment/ID
|accepted_name=Cyperus virens
|accepted_authority=Michaux
|publications={{Treatment/Publication
|title=Fl. Bor.-Amer.
|place=1: 28. 1803
|year=1803
}}
|basionyms=
|synonyms=
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Pycnostachys;Cyperus virens
|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. Pycnostachys]]</div><div class="higher-taxon"><small>species</small>[[Cyperus virens]]</div></div>
|volume=Volume 23
|mention_page=page 143, 154
|treatment_page=page 153
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, cespitose; rhizomes 0.5–2 cm, often absent. <b>Culms</b> trigonous, (20–)60–70(–100) cm × 2.4–6.9 mm, scabrid on angles. <b>Leaves</b> 4–12, flat to V-shaped, with readily visible cross ribs especially on abaxial surface, 20–50 cm × 3–14 mm. <b>Inflorescences</b>: heads digitate to hemispheric, 1–3.5 cm diam.; rays 6–12, 1–9(–14) cm; 2d order rays often present, (0.5–)1–3 cm; 3d order rays occasionally present, 5–12 mm; bracts 4–8, horizontal to ascending at 30°, with prominent cross ribs,V-shaped, (1.5–)3–50(–75) cm × 0.5–13 mm; 2d order bracts 3–10 × 1–2 mm. <b>Spikelets</b> 10–40(–50), oblong to linear-lanceoloid, 5–18 × 2–3.2 mm; floral scales 10–40, pale grayish brown, or greenish, proximally greenish or brownish, oblanceolate, 2-keeled, weakly to distinctly 1-ribbed, proximal half 2-ribbed, (1.3–)1.5–2(–2.4) × 0.9–1.4 mm, apex acute (sometimes mucronulate), apically glabrous, occasionally scabridulous. <b>Flowers</b>: stamens 1–2; anthers 0.8–1.4 mm; styles 0.8–1 mm; stigmas 0.6–0.8 mm. <b>Achenes</b> brown, slightly to distinctly stipitate, ellipsoid (2.7–4.1 times as long as wide), (0.9–)1.2–1.5 × 0.3–0.4 mm, apical beak 0.1–0.5 mm, surfaces glabrous.</span><!--

-->{{Treatment/Body
|phenology=Fruiting spring–fall.
|habitat=Wet pastures, marshes, roadside ditches
|distribution=Ala.;Fla.;Ga.;La.;Miss.;N.C.;S.C.;Tex.;Mexico;Central America;South America.
|discussion=<p>Cyperus virens was found as waif in California in the 1800s (M. F. Denton 1978b; G. C. Tucker 1993b).</p><!--
--><p>Cyperus virens is readily distinguished from other species of subg. Pycnostachys by its trigonous culms, scabrid angles, and leaves and inflorescence bracts conspicuously septate by numerous cross ribs between the main ribs.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cyperus virens
|author=
|authority=Michaux
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=
|family=Cyperaceae
|phenology=Fruiting spring–fall.
|habitat=Wet pastures, marshes, roadside ditches
|distribution=Ala.;Fla.;Ga.;La.;Miss.;N.C.;S.C.;Tex.;Mexico;Central America;South America.
|reference=None
|publication title=Fl. Bor.-Amer.
|publication year=1803
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V23/V23_236.xml
|genus=Cyperus
|subgenus=Cyperus subg. Pycnostachys
|species=Cyperus virens
}}<!--

-->[[Category:Treatment]][[Category:Cyperus subg. Pycnostachys]]