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
}}
|special_status={{Treatment/ID/Special_status
|code=W1
|label=
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|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><i>Cyperus virens</i> was found as waif in California in the 1800s (M. F. Denton 1978b; G. C. Tucker 1993b).</p><!--
--><p><i>Cyperus virens</i> 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=
}}<!--

--><!--

-->{{#Taxon:
name=Cyperus virens
|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=W1;Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V23/V23_236.xml
|genus=Cyperus
|subgenus=Cyperus subg. Pycnostachys
|species=Cyperus virens
}}<!--

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