View source for Cyperus diandrus

{{Treatment/ID
|accepted_name=Cyperus diandrus
|accepted_authority=Torrey
|publications={{Treatment/Publication
|title=Cat. Pl. New York,
|place=90. 1819
|year=1819
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Pycreus diander
|authority=(Torrey) C. B. Clarke
|rank=species
}}
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Pycreus;Cyperus diandrus
|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. Pycreus]]</div><div class="higher-taxon"><small>species</small>[[Cyperus diandrus]]</div></div>
|volume=Volume 23
|mention_page=page 142, 157, 159
|treatment_page=page 161
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual, cespitose, with fibrous roots. <b>Culms</b> trigonous, 4–25(–35) cm, glabrous. <b>Leaves</b> flat, 5–20 cm × 1.5–3 mm. <b>Inflorescences</b>: heads ± digitate, 12–22 mm diam.; rays 3–6, 1–6 cm; bracts 1–4, ± horizontal, flat, 1.5–15 cm × 1.5–3 mm. <b>Spikelets</b> 6–12, oblong-lanceoloid, compressed, 5–10 × 2.8–3.2 mm; floral scales 8–28, closely imbricate, stramineous to light brown or clear (marginal band bright red, spikelet thus appearing dark margined), laterally ribless, oblong to ovate, 2.5–3 × 1.6–1.9 mm. <b>Flowers</b>: stamens 2(–3); anthers 0.3 mm, connective apex reddish, subulate, 0.1–0.2 mm; styles 0.3–0.5 mm; stigmas 2.2–3.1 mm. <b>Achenes</b> brown, network of ridges forming isodiametric or square cells, sessile or stipitate, obovoid to ovoid, 1–1.2 × 0.5–0.6 mm, stipe, if present, 0.1 mm, apex obtuse, apiculate, surfaces minutely punctate.</span><!--

-->{{Treatment/Body
|phenology=Fruiting summer.
|habitat=Emergent shorelines, in sandy, peaty, or slightly brackish areas (though seldom where disturbed)
|elevation=0–600 m
|distribution=N.B.;N.S.;Ont.;Que.;Conn.;Del.;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Nebr.;N.H.;N.J.;N.Y.;Pa.;R.I.;Vt.;Va.
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Cyperus diandrus
|authority=Torrey
|rank=species
|parent rank=subgenus
|synonyms=Pycreus diander
|basionyms=
|family=Cyperaceae
|phenology=Fruiting summer.
|habitat=Emergent shorelines, in sandy, peaty, or slightly brackish areas (though seldom where disturbed)
|elevation=0–600 m
|distribution=N.B.;N.S.;Ont.;Que.;Conn.;Del.;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Nebr.;N.H.;N.J.;N.Y.;Pa.;R.I.;Vt.;Va.
|reference=None
|publication title=Cat. Pl. New York,
|publication year=1819
|special status=Illustrated;Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_256.xml
|genus=Cyperus
|subgenus=Cyperus subg. Pycreus
|species=Cyperus diandrus
}}<!--

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