View source for Carex lacustris

{{Treatment/ID
|accepted_name=Carex lacustris
|accepted_authority=Willdenow
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=4(1): 306. 1805
|year=1805
}}
|common_names=Carex lacustre
|basionyms=
|synonyms=
|hierarchy=Cyperaceae;Carex;Carex sect. Paludosae;Carex lacustris
|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. Paludosae]]</div><div class="higher-taxon"><small>species</small>[[Carex lacustris]]</div></div>
|volume=Volume 23
|mention_page=page 491, 494, 497, 499, 507
|treatment_page=page 493
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>colonial; rhizomes long-creeping. <b>Culms</b> lateral, coarse, trigonous, 50–135 cm, smooth or somewhat scabrous-angled distally. <b>Leaves</b>: basal sheaths reddish purple, strongly fibrillose, bladeless; longest ligules 13–40(–56) mm, much longer than wide; blades glaucous to pale green, M-shaped, (5.5–)8.5–21 mm wide, glabrous. <b>Inflorescences</b> 17–60 cm; proximal 2–4 spikes pistillate, ascending to arching; distal spikes erect; terminal 3–5(–7) spikes staminate. <b>Pistillate</b> scales lanceolate to ovate, apex obtuse to acuminate, glabrous, awn 0.3–3.5 mm, ± scabrous. <b>Perigynia</b> ascending, usually strongly 14–28-veined, narrowly ovoid to narrowly ellipsoid, (4.5–)5.2–7.8 × 1.6–2.5 mm, glabrous; beak obscure, 0.5–1.6 mm, bidentulate, teeth straight, 0.2–0.7(–0.9) mm. <b>2n</b> = 74.</span><!--

-->{{Treatment/Body
|phenology=Fruiting May–Jul.
|habitat=Open swamps, wet, open thickets, marsh edges, sedge meadows, fens, shores of streams, ponds and lakes
|elevation=0–1000 m
|distribution=Alta.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;Que.;Sask.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.H.;N.J.;N.Y.;N.Dak.;Ohio;Pa.;R.I.;S.Dak.;Vt.;Va.;W.Va.;Wis.
|discussion=<p><i>Carex lacustris</i> is abundant and often a dominant of calcareous, north-temperate wetlands. Sometimes extensive stands are seen without fertile culms.</p><!--
--><p>Rare hybrids between <i>Carex lacustris</i> and <i>C. hyalinolepis</i>, <i>C. pellita</i>, <i>C. trichocarpa</i> (P. M. Catling et al. 1989), and <i>C. utriculata</i> are known; the hybrids are sterile and intermediate in morphology and can form extensive clones.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Carex lacustris
|author=
|authority=Willdenow
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Cyperaceae
|phenology=Fruiting May–Jul.
|habitat=Open swamps, wet, open thickets, marsh edges, sedge meadows, fens, shores of streams, ponds and lakes
|elevation=0–1000 m
|distribution=Alta.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;Que.;Sask.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.H.;N.J.;N.Y.;N.Dak.;Ohio;Pa.;R.I.;S.Dak.;Vt.;Va.;W.Va.;Wis.
|reference=None
|publication title=Sp. Pl.
|publication year=1805
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V23/V23_913.xml
|genus=Carex
|section=Carex sect. Paludosae
|species=Carex lacustris
}}<!--

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