View source for Pascopyrum smithii

{{Treatment/ID
|accepted_name=Pascopyrum smithii
|accepted_authority=(Rydb.) Barkworth & D.R. Dewey
|publications=
|common_names=Western wheatgrass
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Elytrigia smithii
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Elytrigia dasystachya
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Elymus smithii
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Agropyron spicatum var. molle
|authority=
|rank=variety
}} {{Treatment/ID/Synonym
|name=Agropyron smithii var. palmeri
|authority=
|rank=variety
}} {{Treatment/ID/Synonym
|name=Agropyron smithii var. molle
|authority=
|rank=variety
}} {{Treatment/ID/Synonym
|name=Molle
|authority=
|rank=forma
}} {{Treatment/ID/Synonym
|name=Agropyron smithii
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Agropyron elmeri
|authority=
|rank=species
}}
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Triticeae;Pascopyrum;Pascopyrum smithii
|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 Triticeae]]</div><div class="higher-taxon"><small>genus</small>[[Pascopyrum]]</div><div class="higher-taxon"><small>species</small>[[Pascopyrum smithii]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 351
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Culms </b>20-100 cm, glabrous. <b>Auricles</b> 0.2-1 mm, often purple; ligules about 0.1 mm; blades 2-26 cm long, 1-4.5 mm wide, decreasing in length upwards, spreading, rigid, adaxial surfaces with prominent veins. <b>Spikes</b> 5-17 cm; middle internodes 4.5-11 mm. <b>Spikelets</b> 12-26(30) mm, with 2-12 florets; lowest rachilla internodes in each spikelet 0.8-2 mm long, 0.5-0.9 mm wide at the top. <b>Glumes</b> 5-15 mm, lower glumes usually exceeded by the upper glumes; lower glumes 0.15-0.8 mm wide at 3/4 length; lemmas 6-14 mm, unawned or awned, awns 0.5-5 mm. <b>2n</b> = 56.</span><!--

-->{{Treatment/Body
|distribution=Wash.;Wis.;Wyo.;N.H.;N.Mex.;Tex.;Mass.;Tenn.;N.Y.;Calif.;Nev.;Colo.;Alaska;Kans.;N.Dak.;Nebr.;Okla.;Ark.;Ill.;Ga.;Ind.;Iowa;Ariz.;Idaho;Alta.;B.C.;Man.;Ont.;Que.;Sask.;Ohio;Utah;Mo.;Minn.;Mich.;Mont.;Ky.;Oreg.;S.Dak.
|discussion=<p><i>Pascopyrum smithii</i> is native to sagebrush deserts and mesic alkaline meadows, growing in both clay and sandy soils. <i>Pascopyrum smithii</i> is probably derived from a <i>Leymus triticoides</i>-<i>Elymus lanceolatus</i> cross (Dewey 1975); it is frequently confused with both. <i>Leymus triticoides</i> differs in usually having 2 spikelets per node and glumes that are narrower at the base. In <i>E. lanceolatus</i>, the leaves tend to be more evenly distributed and the glumes have straight midveins, become narrow beyond midlength, and tend to be wider at 3/4 length (0.35-1.6 mm). In addition, the first rachilla internodes of <i>E. lanceolatus</i> are often longer and narrower (the length/width ratio averaging 2.6, versus 1.8 in <i>P. smithii</i>). No infraspecific taxa of <i>P. smithii</i> are recognized here.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Pascopyrum smithii
|authority=(Rydb.) Barkworth & D.R. Dewey
|rank=species
|parent rank=genus
|synonyms=Elytrigia smithii;Elytrigia dasystachya;Elymus smithii;Agropyron spicatum var. molle;Agropyron smithii var. palmeri;Agropyron smithii var. molle;Molle;Agropyron smithii;Agropyron elmeri
|basionyms=
|family=Poaceae
|illustrator=Cindy Roché
|illustration copyright=Utah State University
|distribution=Wash.;Wis.;Wyo.;N.H.;N.Mex.;Tex.;Mass.;Tenn.;N.Y.;Calif.;Nev.;Colo.;Alaska;Kans.;N.Dak.;Nebr.;Okla.;Ark.;Ill.;Ga.;Ind.;Iowa;Ariz.;Idaho;Alta.;B.C.;Man.;Ont.;Que.;Sask.;Ohio;Utah;Mo.;Minn.;Mich.;Mont.;Ky.;Oreg.;S.Dak.
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V24/V24_1128.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Triticeae
|genus=Pascopyrum
|species=Pascopyrum smithii
}}<!--

-->[[Category:Treatment]][[Category:Pascopyrum]]