View source for Carex duriuscula

{{Treatment/ID
|accepted_name=Carex duriuscula
|accepted_authority=C. A. Meyer
|publications={{Treatment/Publication
|title=Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans
|place=1: 214. 1831
|year=1831
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Carex eleocharis
|authority=L. H. Bailey
|rank=species
}} {{Treatment/ID/Synonym
|name=Carex stenophylla subsp. eleocharis
|authority=(L. H. Bailey) Hultén
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Carex stenophylla var. eleocharis
|authority=(L. H. Bailey) Breitung
|rank=variety
}}
|hierarchy=Cyperaceae;Carex;Carex sect. Divisae;Carex duriuscula
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Carex]]</div><div class="higher-taxon"><small>section</small>[[Carex sect. Divisae]]</div><div class="higher-taxon"><small>species</small>[[Carex duriuscula]]</div></div>
|volume=Volume 23
|mention_page=page 303, 305
|treatment_page=page 304
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Rhizomes </b>0.6–1.8 mm thick, shoots often arising 2–several per cluster, many nodes without shoots. <b>Culms</b> bluntly trigonous, (6–)10–35 cm, smooth-angled distally. <b>Leaves</b>: basal sheaths grayish brown to dark brown, shredding into fibers; sheaths with hyaline inner band, apex not prolonged beyond base of blade; ligules 0–0.8 mm, glabrous; blades 0.6–1.8 mm wide. <b>Inflorescences</b> 0.7–2 cm, 1/2+ as wide as long (if pistillate); spikes 3–8, androgynous, ovoid. <b>Pistillate</b> scales dark reddish brown, with hyaline margins, broadly ovate, 2.4–4.1 mm, apex acute to acuminate, shiny. <b>Anthers</b> 1.4–3 mm, apiculus smooth to warty, very short and broad (30X). <b>Perigynia</b> dark reddish brown, essentially veinless, ± stipitate, broadly ovate to nearly orbicular, thickly plano-convex, 2.4–3.9 × 1.5–2.1 mm, shiny; beak 0.3–0.9 mm, hyaline, weakly bidentulate or oblique.</span><!--

-->{{Treatment/Body
|phenology=Fruiting Jun–Aug.
|habitat=Dry prairies, sagebrush grasslands, openings in dry forests
|elevation=300–3300 m
|distribution=Alta.;B.C.;Man.;N.W.T.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Ill.;Iowa;Kans.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.Mex.;N.Dak.;Oreg.;S.Dak.;Utah;Wash.;Wyo.;Asia.
|discussion=<p><i>Carex duriuscula</i> belongs to a difficult complex of temperate dry grassland species, and the North American plants are recognized here as conspecific with the Asian <i>Carex duriuscula</i>, following T. V. Egorova (1999). Compared to the Asian plants, the North American plants usually are taller [5–12(–20) versus (6–)10–35 cm] and the perigynia are larger [2.5–3(–3.2) versus 2.4–3.9 mm] (T. V. Egorova 1999). More work is still needed here. North American plants have often been treated as a variety or subspecies of the Eurasian C. stenophylla, which is quite different in having larger perigynia that are distinctly veined adaxially.</p><!--
--><p>The species is sporadically introduced along roads and in railway yards east of its native range.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Carex duriuscula
|authority=C. A. Meyer
|rank=species
|parent rank=section
|synonyms=Carex eleocharis;Carex stenophylla subsp. eleocharis;Carex stenophylla var. eleocharis
|basionyms=
|family=Cyperaceae
|phenology=Fruiting Jun–Aug.
|habitat=Dry prairies, sagebrush grasslands, openings in dry forests
|elevation=300–3300 m
|distribution=Alta.;B.C.;Man.;N.W.T.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Ill.;Iowa;Kans.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.Mex.;N.Dak.;Oreg.;S.Dak.;Utah;Wash.;Wyo.;Asia.
|reference=None
|publication title=Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans
|publication year=1831
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_529.xml
|genus=Carex
|section=Carex sect. Divisae
|species=Carex duriuscula
}}<!--

-->[[Category:Treatment]][[Category:Carex sect. Divisae]]