View source for Calamagrostis montanensis

{{Treatment/ID
|accepted_name=Calamagrostis montanensis
|accepted_authority=(Scribn.) Vasey
|publications=
|common_names=Plains reedgrass
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Poeae;Calamagrostis;Calamagrostis montanensis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Pooideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Poeae]]</div><div class="higher-taxon"><small>genus</small>[[Calamagrostis]]</div><div class="higher-taxon"><small>species</small>[[Calamagrostis montanensis]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 724
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>with sterile culms; ces¬pitose, with rhizomes 6+ cm long, 1-2 mm thick. <b>Culms</b> 15-50(54) cm, unbranched, usually scabrous, rarely smooth; nodes 1-2. <b>Sheaths</b> and collars smooth or slightly scabrous; ligules (1)2-3 mm, obtuse to acute, more or less lacerate; blades (5)8-19(23) cm long, (1)2-3(4) mm wide, usually involute, seldom reaching the panicles, abaxial surfaces scabrous, adaxial surfaces usually scabrous, rarely smooth, glabrous or sparsely hairy. <b>Panicles</b> 4-9(14) cm long, (0.7)1-2(3.5) cm wide, erect, contracted and not or only slightly interrupted, yellowish green with a light purple tinge; branches 1.3-3(3.7) cm, sparsely short-scabrous to densely long-scabrous, spikelet-bearing to the base. <b>Spikelets</b> (3)3.5-4.5(7) mm; rachilla prolongations about 1 mm, densely bearded, hairs to 2 mm. <b>Glumes</b> keeled, smooth or scabrous throughout, lateral veins usually somewhat obscure, rarely prominent, apices acute to acuminate, rarely awn-tipped; callus hairs (1)1.5-2(2.5) mm, 0.4-0.8 times as long as the lemmas, abundant; lemmas (2.5)3-3.5(5.5) mm, 0.5-1(2) mm shorter than the glumes; awns (1)2-3(4) mm, usually attached to the lower 1/10 – 2/5 of the lemmas, rarely above the middle, sometimes slightly exserted, stout, distinguishable from the callus hairs, slightly bent; anthers (1.1)1.8-2.4(3) mm. <b>2n</b> = 28.</span><!--

-->{{Treatment/Body
|distribution=Colo.;Minn.;N.Dak.;S.Dak.;Mont.;Alta.;B.C.;Man.;Sask.;Idaho;Wyo.
|discussion=<p><i>Calamagrostis montanensis</i> inhabits prairie grass¬lands and sagebrush flats, benchlands, valley bottoms, and occasionally woodlands, at 200-2600 m. It grows in the continental interior from eastern British Columbia (near Fort St. John and Invermere) and adjacent Alberta, south to southern Wyoming and east to Manitoba and western Minnesota. It has also been reported from Peace Point in Wood Buffalo National Park in northeastern Alberta, but this report has not been verified. <i>Calamagrostis montanensis</i> may be mistaken for <i>C. purpurascens</i> (p. 710), but the latter species has hairy adaxial leaf surfaces and longer awns.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Calamagrostis montanensis
|author=
|authority=(Scribn.) Vasey
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Poaceae
|distribution=Colo.;Minn.;N.Dak.;S.Dak.;Mont.;Alta.;B.C.;Man.;Sask.;Idaho;Wyo.
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V24/V24_1025.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Poeae
|genus=Calamagrostis
|species=Calamagrostis montanensis
}}<!--

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