View source for Carex oligosperma

{{Treatment/ID
|accepted_name=Carex oligosperma
|accepted_authority=Michaux
|publications={{Treatment/Publication
|title=Fl. Bor.-Amer.
|place=2: 174. 1803
|year=1803
}}
|common_names=Carex oligosperme
|basionyms=
|synonyms=
|hierarchy=Cyperaceae;Carex;Carex sect. Vesicariae;Carex oligosperma
|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. Vesicariae]]</div><div class="higher-taxon"><small>species</small>[[Carex oligosperma]]</div></div>
|volume=Volume 23
|mention_page=page 500, 502, 507
|treatment_page=page 504
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>loosely cespitose; rhizomes long. <b>Culms</b> obtusely trigonous in cross section, 30–90 cm, smooth or scabrous-angled distally. <b>Leaves</b>: basal sheaths reddish purple; ligules as wide as long to wider than long; blades dark green, wiry, filiform, with involute margins, 0.5–2.5 mm wide, glabrous. <b>Inflorescences</b> 3–20 cm; proximal bract 3–15(–25) cm, shorter than to exceeding inflorescence; proximal 1–2 spikes pistillate, erect, ovoid to cylindric; terminal 1(–2) spikes staminate. <b>Pistillate</b> scales ovate, 3.2–5.6 × 2.6–3.8 mm, shorter than perigynia, margins entire, apex obtuse to acute, awnless. <b>Perigynia</b> ascending, 7–15-veined, veins extending into beak, ovate, 4–6.7 × 2.5–3.4 mm, leathery, apex tapered; beak 0.3–0.9 mm, obscurely bidentulate, glabrous, teeth straight to somewhat outcurved, to 0.3 mm. <b>Stigmas</b> 3. <b>Achenes</b> brown, trigonous, smooth.</span><!--

-->{{Treatment/Body
|phenology=Fruiting summer.
|habitat=Bogs, often forming extensive stands in Sphagnum-dominated areas, poor fens, sometimes in acidic, sandy, or peaty soils in open swamps, marshes, lakeshores, riverbanks
|elevation=0–1200 m
|distribution=Man.;N.B.;Nfld. and Labr.;N.S.;Ont.;Que.;Sask.;Yukon;Ind.;Maine;Mich.;Minn.;N.H.;N.Y.;N.C.;Ohio;Pa.;Vt.;Wis.
|discussion=<p><i>Carex oligosperma</i> hybridizes rarely with <i>C. rostrata</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Carex oligosperma
|authority=Michaux
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Cyperaceae
|phenology=Fruiting summer.
|habitat=Bogs, often forming extensive stands in Sphagnum-dominated areas, poor fens, sometimes in acidic, sandy, or peaty soils in open swamps, marshes, lakeshores, riverbanks
|elevation=0–1200 m
|distribution=Man.;N.B.;Nfld. and Labr.;N.S.;Ont.;Que.;Sask.;Yukon;Ind.;Maine;Mich.;Minn.;N.H.;N.Y.;N.C.;Ohio;Pa.;Vt.;Wis.
|reference=None
|publication title=Fl. Bor.-Amer.
|publication year=1803
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V23/V23_937.xml
|genus=Carex
|section=Carex sect. Vesicariae
|species=Carex oligosperma
}}<!--

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