View source for Elymus diversiglumis

{{Treatment/ID
|accepted_name=Elymus diversiglumis
|accepted_authority=Scribn. & C.R. Ball.
|publications=
|common_names=Unequal-glumed wildrye
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Triticeae;Elymus;Elymus diversiglumis
|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>[[Elymus]]</div><div class="higher-taxon"><small>species</small>[[Elymus diversiglumis]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 316
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>cespitose, not rhizomatous, sometimes moderately glacous. <b>Culms</b> 70-160 cm, erect; nodes 4-9, mostly exposed, glabrous. <b>Leaves</b> evenly distributed; sheaths glabrous, often purplish; auricles 1-2 mm, purplish or brownish black; ligules usually 1-2 mm; blades 5-17 mm wide, lax, adaxial surfaces usually pilose, at least on the veins, occasionally scabrous. <b>Spikes</b> 8-28 cm long, 3-5 cm wide, nodding to pendent, with 2 spikelets per node, rarely with 1 or 3 at a few nodes; internodes 4-6(9) mm long, 0.2-0.3 mm thick at the thinnest sections, margins and summits often pubescent. <b>Spikelets</b> 10-16 mm, appressed, with 2-4(5) florets, lowest florets functional; disarticulation above the glumes, beneath each floret. <b>Glumes</b> usually differing in length by at least (3)4 mm, occasionally obsolete, (1)2-15(20) mm long including the undifferentiated awns, indurate at the base, (0.1)0.2-0.4(0.6) mm wide, setaceous, 0-1-veined, tapering from the base, scabrous or hispidulous at least towards the apices, margins firm, awns often outcurving; lemmas 7-12 mm, usually silvery-hirsute to sericeous, occasionally hirtellous or strigose, at least near the margins, backs sometimes scabrous, awns 18-35 mm, moderately to strongly outcurving at maturity; paleas 7-10 mm, obtuse, occasionally emarginate; anthers 2-4 mm. <b>Anthesis</b> from early June to late July. <b>2n</b> = 28.</span><!--

-->{{Treatment/Body
|distribution=Okla.;Man.;Ont.;Sask.;Minn.;Mich.;N.Dak.;S.Dak.;Wis.;Ark.;Ill.;Iowa;Mo.;Wyo.
|discussion=<p><i>Elymus diversiglumis</i> grows in moist to dry, often base-rich and alluvial soils, in open woods, woodland margins, and thickets in the northern Great Plains, from Saskatchewan and Manitoba to Wyoming, Wisconsin, and Iowa.</p><!--
--><p><i>Elymus diversiglumis</i> is a variable species that, like <i>E. svensonii</i> (p. 314) and <i>E. churchii</i> (p. 314), may have originated from hybrids between <i>E. canadensis </i>var.<i> canadensis</i> (p. 305) and <i>E. hystrix</i> (see next), although part of its range extends further west than the current distribution of the latter species. <i>Elymus diversiglumis</i> usually reaches anthesis 2-4 weeks earlier than sympatric populations of <i>E. canadensis</i>. Church (1954, 1958, 1967a) found that most artificial canadensis-hystrix hybrids, as well as some plants of <i>E. diversiglumis</i> itself, are sterile. Those that were not sterile could occasionally form fertile backcrosses with <i>E. canadensis</i> and, to a lesser extent, with <i>E. hystrix</i>. Introgressant populations involving all three species are known. Artificial crosses with other species have not been successful.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Elymus diversiglumis
|authority=Scribn. & C.R. Ball.
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Poaceae
|illustrator=Cindy Roché;Annaliese Miller
|illustration copyright=Utah State University
|distribution=Okla.;Man.;Ont.;Sask.;Minn.;Mich.;N.Dak.;S.Dak.;Wis.;Ark.;Ill.;Iowa;Mo.;Wyo.
|reference=None
|publication title=
|publication year=
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V24/V24_443.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Triticeae
|genus=Elymus
|species=Elymus diversiglumis
}}<!--

-->[[Category:Treatment]][[Category:Elymus]]