View source for Cyperus surinamensis

{{Treatment/ID
|accepted_name=Cyperus surinamensis
|accepted_authority=Rottbøll
|publications={{Treatment/Publication
|title=Descr. Pl. Rar.,
|place=20. 1772
|year=1772
}}
|basionyms=
|synonyms=
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Pycnostachys;Cyperus surinamensis
|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 surinamensis]]</div></div>
|volume=Volume 23
|mention_page=page 143
|treatment_page=page 153
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual or short-lived perennial, annuals cespitose; rhizomes absent. <b>Culms</b> 2–6, trigonous, (10–)35–80 cm × 0.5–2(–4) mm, scabridulous with retrorse prickles (infrequently glabrous or rarely also with extrorse prickles). <b>Leaves</b> 3–9, V-shaped, (12–)25–45(–65) cm × 2–10 mm; blades and bracts without cross ribs. <b>Inflorescences</b>: heads umbellate, 10–20(–30) mm diam.; rays 4–12, 1–6 cm, minutely scabridulous with retrorse prickles; 2d order rays often present, 1–2(–3) cm; 3d order rays rarely present, 0.5–1.5 cm; bracts 3–8, approximately horizontal to ascending at 30°, V-shaped to flat, 2–15(–34) cm × 1–4(–5) mm. <b>Spikelets</b> (6–)15–40(–65), greenish white, linear to linear-oblong, (3–)4–12(–15) × 1.5–2.5 mm; floral scales 10–50(–65), laterally pale yellow, light brown, or reddish brown, 2-keeled, medially 3-ribbed, lanceolate, 1–1.5 × 0.8–0.9 mm, distinctly reticulate, often scabridulous near apex. <b>Flowers</b>: stamen 1; anthers 0.5 mm; styles 0.8–1.1 mm; stigmas 0.5 mm. <b>Achenes</b> brown to reddish brown, slightly stipitate, narrowly ellipsoid, 0.7–0.9 × 0.2–0.4 mm, apex apiculate, surfaces papillate or obscurely reticulate to rugulose.</span><!--

-->{{Treatment/Body
|phenology=Fruiting late spring–early fall.
|habitat=Moist sunny areas with disturbed soils
|elevation=0–200 m
|distribution=Ala.;Ark.;Fla.;Ga.;Kans.;La.;Miss.;Okla.;S.C.;Tenn.;Tex.;Mexico;Central America;South America.
|discussion=<p><i>Cyperus surinamensis</i> is distinguished readily from all other species of the genus in the New World by the usual presence of retrorse prickles on the culms and rays.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cyperus surinamensis
|author=
|authority=Rottbøll
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=
|family=Cyperaceae
|phenology=Fruiting late spring–early fall.
|habitat=Moist sunny areas with disturbed soils
|elevation=0–200 m
|distribution=Ala.;Ark.;Fla.;Ga.;Kans.;La.;Miss.;Okla.;S.C.;Tenn.;Tex.;Mexico;Central America;South America.
|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_235.xml
|genus=Cyperus
|subgenus=Cyperus subg. Pycnostachys
|species=Cyperus surinamensis
}}<!--

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