View source for Achnatherum occidentale subsp. occidentale

{{Treatment/ID
|accepted_name=Achnatherum occidentale subsp. occidentale
|accepted_authority=unknown
|publications=
|common_names=Western needlegrass
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Stipeae;Achnatherum;Achnatherum occidentale;Achnatherum occidentale subsp. occidentale
|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 Stipeae]]</div><div class="higher-taxon"><small>genus</small>[[Achnatherum]]</div><div class="higher-taxon"><small>species</small>[[Achnatherum occidentale]]</div><div class="higher-taxon"><small>subspecies</small>[[Achnatherum occidentale subsp. occidentale]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 123
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Culms </b>14-50 cm tall, 0.3-1 mm thick, internodes glabrous. <b>Basal</b> sheaths mostly glabrous, often ciliate or sparsely tomentose at the throat; collars usually without tufts of hair at the sides; blades 0.3-2 mm wide when flat, usually convolute and 0.1-0.2 mm in diameter. <b>Panicles</b> 5-20 cm; longest branches 1.5-4 cm. <b>Glumes</b> often purplish; lemmas with apical pubescence similar in length to the basal awn pubescence; awns 15-42 mm, first 2 segments always pilose, terminal segment usually pilose, hairs becoming shorter distally, occasionally scabridulous or smooth.</span><!--

-->{{Treatment/Body
|discussion=<p>Achnatherum occidentale subsp. occidentale grows above 2400 m, primarily in California. It differs from A. occidentale subsp. pubescens in having culms that are glabrous throughout and awns with terminal segments that are usually pilose. One specimen from Idaho has been seen; it has the palea/lemma ratio of subsp. californicum but the pilose terminal awn segments, slender habit, and purplish coloration of subsp. occidentale.</p>
|tables=
|references=
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-->{{#Taxon:
name=Achnatherum occidentale subsp. occidentale
|author=
|authority=unknown
|rank=subspecies
|parent rank=species
|synonyms=
|basionyms=
|family=Poaceae
|illustrator=Cindy Roché
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/314eb390f968962f596ae85f506b4b3db8683b1b/coarse_grained_fna_xml/V24/V24_172.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Stipeae
|genus=Achnatherum
|species=Achnatherum occidentale
|subspecies=Achnatherum occidentale subsp. occidentale
}}<!--

-->[[Category:Treatment]][[Category:Achnatherum occidentale]]