View source for Cyperus involucratus

{{Treatment/ID
|accepted_name=Cyperus involucratus
|accepted_authority=Rottbøll
|publications={{Treatment/Publication
|title=Descr. Pl. Rar.,
|place=22. 1772
|year=1772
}}
|common_names=Umbrella-plant
|basionyms=
|synonyms=
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Pycnostachys;Cyperus involucratus
|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 involucratus]]</div></div>
|volume=Volume 23
|mention_page=page 143, 151
|treatment_page=page 150
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, cespitose, rhizomatous. <b>Culms</b> trigonous, 30–150 cm × 1–5(–8) mm. <b>Leaves</b> bladeless. <b>Inflorescences</b>: heads digitate, 15–30(–36) mm diam.; rays (14–)20–22, (2–)5–12(–20) cm; 2d order rays 0.3–3(–4) cm; 3d order rays sometimes present, 0.3–2.5 cm; bracts (4–)18–22, ± horizontal, flat, 15–27 cm × (1.5–)8–12 mm. <b>Spikelets</b> 8–20, ovoid to linear-lanceoloid, compressed, 5–25 × 1.5–2 mm; floral scales 8–28, laterally whitish or light brown, ± hyaline, medially light brown, laterally ribless, medially 3-ribbed, 2-keeled in proximal 30–60%, deltate-ovate, 1.6–2.4 × (1–)1.2–1.5(–1.7) mm, apex acute. <b>Flowers</b>: stamens 3; anthers 0.7–1 mm; styles 0.5–1 mm; stigmas 0.6–1 mm. <b>Achenes</b> brown, sessile or stipitate, broadly ellipsoid, 0.6–0.8 × 0.4–0.6 mm, stipe if present to 0.1 mm, apex obtuse, apiculate, surfaces puncticulate.</span><!--

-->{{Treatment/Body
|phenology=Fruiting early summer–fall.
|habitat=Damp, disturbed soils, ditches, stream banks
|elevation=0–100(–800) m
|distribution=Calif.;Fla.;La.;Tex.;e Africa.
|discussion=<p><i>Cyperus involucratus</i> has been collected in New York (R. S. Mitchell and G. C. Tucker 1997).</p><!--
--><p><i>Cyperus involucratus</i> is widely cultivated as a water plant in greenhouses and outdoors in warm-temperate or tropical climates. It has long been misidentified in the flora as C. alternifolius Linnaeus, an endemic of Madagascar (G. C. Tucker 1983).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cyperus involucratus
|author=
|authority=Rottbøll
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=
|family=Cyperaceae
|phenology=Fruiting early summer–fall.
|habitat=Damp, disturbed soils, ditches, stream banks
|elevation=0–100(–800) m
|distribution=Calif.;Fla.;La.;Tex.;e Africa.
|introduced=true
|reference=None
|publication title=Descr. Pl. Rar.,
|publication year=1772
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V23/V23_227.xml
|genus=Cyperus
|subgenus=Cyperus subg. Pycnostachys
|species=Cyperus involucratus
}}<!--

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