View source for Cyperus dentoniae

{{Treatment/ID
|accepted_name=Cyperus dentoniae
|accepted_authority=G. C. Tucker
|publications={{Treatment/Publication
|title=Syst. Bot. Monogr.
|place=2: 56. 1983
|year=1983
}}
|common_names=Denton’s flatsedge
|basionyms={{Treatment/ID/Synonym
|name=Mariscus pubescens
|authority=J. Presl & C. Presl
}}
|synonyms={{Treatment/ID/Synonym
|name=Cyperus flavomariscus var. peduncularis
|authority=Britton
}} {{Treatment/ID/Synonym
|name=Cyperus flavus var. peduncularis
|authority=(Britton) Kükenthal
}}
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Cyperus;Cyperus dentoniae
|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 dentoniae]]</div></div>
|volume=Volume 23
|mention_page=page 148, 185, 188
|treatment_page=page 187
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, cespitose, shortly rhizomatous. <b>Culms</b> 1–4, trigonous, (2–)20–50(–80) cm × (0.8–)1.5–2(–2.8) mm, basally glabrous or nearly so, apically hispidulous, on faces and angles distally, especially so immediately proximal to bracts. <b>Leaves</b> 2–5(–7), V-shaped, (5–)15–30(–45) cm × (1.5–)2.5–5(–8) mm. <b>Inflorescences</b>: spike 1 (occasionally 1–2 smaller sessile spikes at base), densely cylindric, (7–)11–20(–25) × (5–) 7–10(–12) mm; rays 3–6(–10), (1–)3–6(–18) cm, rays and rachis hispidulous; bracts 4–8(–10), ascending at 30–60°, V-shaped, (2–)10–25(–45) cm × (1–)3–6(–8) mm; rachilla deciduous, wings persistent, 0.3–0.4 mm wide. <b>Spikelets</b> (20–)70–120(–140), oblong-ellipsoid to oblong-lanceoloid, ± terete to quadrangular, (2.2–)3.4–4.5(–5.6) × (0.8–)0.9–1.2(–1.3) mm; distal spikelet spreading or ascending; floral scales 1(–3), appressed, stramineous, red-spotted, strongly 3(–4)-ribbed on either side of green part, medially weakly 3-ribbed, ovate to elliptic ovate, (2.4–)2.8–3.3(–3.6) × 1.6–2 mm, apex acute, mucronulate from excurrent midrib. <b>Flowers</b>: anthers (0.3–)0.4–0.6 mm; styles 0.4–0.6(–0.8) mm; stigmas 1–1.4 mm. <b>Achenes</b> brown, stipitate, ellipsoid, (1.6–)1.8–2 × (0.7–) 0.8–0.9 mm, stipe 0.1–0.2 × 0.2 mm, apex ± truncate, apiculate, surfaces puncticulate to glabrous.</span><!--

-->{{Treatment/Body
|phenology=Fruiting mid summer–fall (Jul–Sep).
|habitat=Various dry, open environments
|elevation=500–1000 m
|distribution=Ariz.;Mexico;Central America;South America.
|discussion=<p><i>Cyperus dentoniae</i> was not treated in G. Kükenthal’s monograph (1935–1936), apparently because he did not see any materials of the species. The plant has been treated as “C. asper (Liebmann) O’Neill,” a name based on Mariscus asper Liebmann and a synonym of <i>C. mutisii</i> (A. B. Ayers 1946).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cyperus dentoniae
|author=
|authority=G. C. Tucker
|rank=species
|parent rank=subgenus
|synonyms=Cyperus flavomariscus var. peduncularis;Cyperus flavus var. peduncularis
|basionyms=Mariscus pubescens
|family=Cyperaceae
|phenology=Fruiting mid summer–fall (Jul–Sep).
|habitat=Various dry, open environments
|elevation=500–1000 m
|distribution=Ariz.;Mexico;Central America;South America.
|reference=None
|publication title=Syst. Bot. Monogr.
|publication year=1983
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V23/V23_324.xml
|genus=Cyperus
|subgenus=Cyperus subg. Cyperus
|species=Cyperus dentoniae
}}<!--

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