View source for Carex douglasii

{{Treatment/ID
|accepted_name=Carex douglasii
|accepted_authority=Boott
|publications={{Treatment/Publication
|title=in W. J. Hooker, Fl. Bor.-Amer.
|place=2: 213, plate 214. 1839
|year=1839
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms=
|hierarchy=Cyperaceae;Carex;Carex sect. Divisae;Carex douglasii
|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 douglasii]]</div></div>
|volume=Volume 23
|mention_page=page 303
|treatment_page=page 304
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Rhizomes </b>0.8–1.9 mm thick, shoots often arising 2–several per cluster, many nodes without shoots. <b>Culms</b> bluntly trigonous, (8–)15–40 cm, smooth-angled distally. <b>Leaves</b>: basal sheaths pale to dark brown; sheaths with hyaline inner band, apex not prolonged, glabrous; ligules 0–2.8 mm; blades 1–3(–3.5) mm wide. <b>Inflorescences</b> dense, headlike, 1.2–3.5(–4.5) cm, 1/2+ as wide as long (if pistillate); spikes 6–20(–25), usually unisexual; staminate spikes lanceoloid; pistillate spikes ovoid. <b>Pistillate</b> scales pale brown to ± whitish hyaline, hyaline margins, lanceolate to ovate, (4.3–)4.7–7.5 mm, apex acute to acuminate, satiny to ± dull. <b>Anthers</b> (2.5–)2.8–3.9 mm, apiculus bristly (30X). <b>Perigynia</b> brown, essentially veinless, usually stipitate, ovate to broadly elliptic, ± plano-convex, (3–)3.5–4.2(–4.8) × 1.2–2.1 mm, dull; beak (0.9–)1.2–1.9 mm, apex hyaline, friable, oblique or obscurely bidentulate.</span><!--

-->{{Treatment/Body
|phenology=Fruiting Jun–Aug.
|habitat=Prairie, sagebrush grasslands, forest openings, meadows, marsh edges, stream banks, in dry to wet soils, various open, successional and usually moist habitats, tolerant of alkaline soils
|elevation=500–3500 m
|distribution=Alta.;B.C.;Sask.;Ariz.;Calif.;Colo.;Idaho;Mo.;Mont.;Nebr.;Nev.;N.Mex.;N.Dak.;Oreg.;S.Dak.;Utah;Wash.;Wyo.;Mexico (Baja California).
|discussion=<p>The stigmas of <i>Carex douglasii</i> are very long and form a tangled mat that persists essentially until the perigynia mature, giving a distinctive appearance to pistillate inflorescences of the species. Though the plants are uniform in appearance superficially, the perigynia are quite variable in shape and size.</p><!--
--><p>The Missouri locality is an introduction in a railway yard.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Carex douglasii
|authority=Boott
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Cyperaceae
|phenology=Fruiting Jun–Aug.
|habitat=Prairie, sagebrush grasslands, forest openings, meadows, marsh edges, stream banks, in dry to wet soils, various open, successional and usually moist habitats, tolerant of alkaline soils
|elevation=500–3500 m
|distribution=Alta.;B.C.;Sask.;Ariz.;Calif.;Colo.;Idaho;Mo.;Mont.;Nebr.;Nev.;N.Mex.;N.Dak.;Oreg.;S.Dak.;Utah;Wash.;Wyo.;Mexico (Baja California).
|reference=None
|publication title=in W. J. Hooker, Fl. Bor.-Amer.
|publication year=1839
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_528.xml
|genus=Carex
|section=Carex sect. Divisae
|species=Carex douglasii
}}<!--

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