View source for Pascopyrum

{{Treatment/ID
|accepted_name=Pascopyrum
|accepted_authority=Á. Löve
|publications=
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Triticeae;Pascopyrum
|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>
|volume=Volume 24
|mention_page=
|treatment_page=page 348
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; rhizomatous. <b>Culms</b> 20-100 cm. <b>Leaves</b> basally concentrated; sheaths striate when dry, smooth, usually glabrous, rarely pilose; auricles present; ligules membranous. <b>Inflorescences</b> terminal, distichous spikes, spikelets usually 1 per node, occasionally in pairs at the lower nodes, spikelets at the lower 4-6 nodes often sterile; lowest internodes to 26 mm, 2 times as long as the middle internodes. <b>Spikelets</b> 12-26(30) mm, 1-3 times the length of the internodes, straight, usually ascending, not appressed, with 2-12 florets; disarticulation above the glumes, beneath the florets. <b>Glumes</b> 5-15 mm, 1/2 - 2/3 the length of the spikelets, usually narrowly lanceolate, stiff, tapering from midlength or below, slightly curving to the side distally, not keeled, 3-5-veined basally, 1-veined distally, apices acuminate; lemmas lanceolate, rounded on the back, acute, mucronate to awned, awns to 5 mm, straight; paleas slightly shorter than the lemmas; anthers 3, 2.5-6 mm. <b>Caryopses</b> 4-5 mm, falling with the lemmas and paleas. <b>2n</b> = 56. <b>Haplomes</b> St, H, Ns, and Xm.</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</i> is a North American allooctoploid genus with one species. It combines the genomes of <i>Leymus</i> with those of Elytnus. There are no other species that combine these two tetraploid genomes, although there are many species of both <i>Elymus</i> and <i>Leymus</i> in Eurasia and North America.</p>
|tables=
|references={{Treatment/Reference
|id=dewey1975b
|text=Dewey, D.R. 1975. The origin of Agropyron smithii. Amer. J. Bot. 62:524-530
}}{{Treatment/Reference
|id=gillett1960a
|text=Gillett, J.M. and H.A. Senn. 1960. Cytotaxonomy and infraspecific variation of Agropyron smithii Rydb. Canad. J. Bot. 38:747-760.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Pascopyrum
|author=Mary E. Barkworth;
|authority=Á. Löve
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Poaceae
|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=dewey1975b;gillett1960a
|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_501.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Triticeae
|genus=Pascopyrum
}}<!--

-->[[Category:Treatment]][[Category:Poaceae tribe Triticeae]]