View source for Cyperus refractus

{{Treatment/ID
|accepted_name=Cyperus refractus
|accepted_authority=Engelmann ex Boeckeler
|publications={{Treatment/Publication
|title=Linnaea
|place=36: 369. 1870, based on Cyperus refrofractus Engelmann ex Steudel, Syn. Pl. Glumac. 2: 47. 1855, not (Linnaeus) Torrey 1848
|year=1848
}}
|basionyms=
|synonyms=
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Cyperus;Cyperus refractus
|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 refractus]]</div></div>
|volume=Volume 23
|mention_page=page 149, 181
|treatment_page=page 182
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, cespitose, with inconspicuous, short rhizomes scarcely visible between culm bases. <b>Culms</b> basally cormlike, trigonous, 30–100 cm × 2–4 mm, glabrous. <b>Leaves</b> V-shaped to flat, 20–70 cm × 3–8 mm, adaxial surface, margins minutely scabridulous. <b>Inflorescences</b>: spikes loose, broadly ellipsoid to ovoid, 4–7 × 2–6 cm; rays 6–13(–16), 4–25 cm, glabrous; rachis 1.5–3 cm; bracts 3–6, horizontal to ascending at 30°, flat, 5–35 cm × 2.5–6 mm; rachilla persistent, wings 0.4–0.5 mm wide. <b>Spikelets</b> (13–)20–60(–74), linear, ± terete, (11–)13–25(–28) × 1.2–1.5 mm; distal spikelets spreading or ascending; floral scales persistent, (2–)3–6, stramineous, red-purple striate, laterally 3–5-ribbed, ovate-lanceolate, 4.5–5.3 × 1.2–1.5 mm. <b>Flowers</b>: anthers 1–1.5 mm; styles 1.5 mm; stigmas 1.5 mm. <b>Achenes</b> brown to purplish brown, oblong-linear (5–6 times long as wide), 2.6–3 × 0.5–0.6 mm, base cuneate, apex obtuse, surfaces puncticulate.</span><!--

-->{{Treatment/Body
|phenology=Fruiting summer (Jul–Aug).
|habitat=Sandy riverbanks, gravelly roadsides, pastures, disturbed places
|elevation=20–300 m
|distribution=Ala.;Ark.;D.C.;Ga.;Md.;Mo.;N.C.;Pa.;S.C.;Tenn.;Va.;W.Va.
|discussion=<p><i>Cyperus refractus</i> is often mistaken for <i>C. strigosus</i>, which has shorter anthers (0.4–0.5 mm) and spreading, ± deciduous floral scales.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cyperus refractus
|author=
|authority=Engelmann ex Boeckeler
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=
|family=Cyperaceae
|phenology=Fruiting summer (Jul–Aug).
|habitat=Sandy riverbanks, gravelly roadsides, pastures, disturbed places
|elevation=20–300 m
|distribution=Ala.;Ark.;D.C.;Ga.;Md.;Mo.;N.C.;Pa.;S.C.;Tenn.;Va.;W.Va.
|reference=None
|publication title=Linnaea
|publication year=1848
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V23/V23_310.xml
|genus=Cyperus
|subgenus=Cyperus subg. Cyperus
|species=Cyperus refractus
}}<!--

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