View source for Calamagrostis tweedyi

{{Treatment/ID
|accepted_name=Calamagrostis tweedyi
|accepted_authority=(Scribn.) Scribn.
|publications=
|common_names=Cascade reedgrass;Tweedy's reedgrass
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Poeae;Calamagrostis;Calamagrostis tweedyi
|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 tweedyi]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 714
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>without sterile culms; loosely cespitose, with rhizomes 1-10 cm long, 2-4 mm thick. <b>Culms</b> (47)60-120(150) cm, unbranched, smooth, rarely slightly scabrous; nodes 2-3. <b>Sheaths</b> and collars smooth; ligules (1)3.5-6(8) mm, obtuse, lacerate; blades (3)4-20(38) cm long, (2)3-8(13) mm wide, culm blades wider than 6 mm, flat, abaxial surfaces smooth, adaxial surfaces smooth or slightly scabrous, glabrous or sparsely hairy. <b>Panicles</b> 7-16(19) cm long, (1)1.5-2 cm wide, erect, usually contracted, sometimes interrupted near the base, pale purple to purple; branches (0.2)2.4-6.7(7.7) cm, smooth, sometimes sparsely scabrous distally, spikelet-bearing to the base. <b>Spikelets</b> (4.5)5.5-8(9) mm; rachilla prolongations (0.5)1-2(4) mm, hairs 1.5-3 mm. <b>Glumes</b> keeled, smooth or the keels scabrous, lateral veins prominent, apices acute; callus hairs 0.8-1 mm, 0.2-0.3 times as long as the lemmas, sparse; lemmas (4)4.5-6.5(7.5) mm, 0-1.5 mm shorter than the glumes, scabridulous; awns 6-8 mm, attached to the lower 1/5 – 3/10 of the lemmas, exserted more than 2 mm, stout, easily distinguished from the callus hairs, bent; anthers 2-3.5 mm. <b>2n</b> = unknown.</span><!--

-->{{Treatment/Body
|distribution=Mont.;Idaho;Wash.
|discussion=<p><i>Calamagrostis tweedyi</i> grows in montane to subalpine moist meadows and coniferous forests, often in association with <i>Carex geyeri</i>, at 900-2000 m. Its range extends from Washington and Oregon to western Montana.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Calamagrostis tweedyi
|author=
|authority=(Scribn.) Scribn.
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Poaceae
|distribution=Mont.;Idaho;Wash.
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V24/V24_1006.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Poeae
|genus=Calamagrostis
|species=Calamagrostis tweedyi
}}<!--

-->[[Category:Treatment]][[Category:Calamagrostis]]