View source for Elymus trachycaulus subsp. trachycaulus

{{Treatment/ID
|accepted_name=Elymus trachycaulus subsp. trachycaulus
|accepted_authority=unknown
|publications=
|common_names=Slender wheatgrass;Élyme à chaumes rudes;Agropyre à chaumes rudes
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Agropyron trachycaulum var. novae-angliae
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Elymus trachycaulus subsp. teslinensis
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Elymus trachycaulus subsp. novae-angliae
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Elymus trachycaulus subsp. major
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Agropyron trachycaulum var. typicum
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Agropyron trachycaulum var. pilosiglume
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Agropyron trachycaulum var. majus
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Agropyron teslinense
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Agropyron tenerum
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Agropyron pauciflorum
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Agropyron caninum var. tenerum
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Agropyron caninum var. majus
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Agropyron caninum subsp. majus
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Agropyron caninum var. bornemannii
|authority=unknown
}}
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Triticeae;Elymus;Elymus trachycaulus;Elymus trachycaulus subsp. trachycaulus
|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 trachycaulus]]</div><div class="higher-taxon"><small>subspecies</small>[[Elymus trachycaulus subsp. trachycaulus]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 322
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Culms </b>30-150 cm. <b>Spikes</b> (4)8-30 cm long, 0.5-0.8 cm wide, 2-sided; internodes 8-15 mm. <b>Spikelets</b> with 3-9 florets, the bases usually visible. <b>Glumes</b> 5-17 mm, at least 1 vein scabrous to near the base, sometimes all veins scabrous, unawned or with straight awns shorter than 2 mm; lemmas unawned or awned, awns to 5 mm, straight.</span><!--

-->{{Treatment/Body
|discussion=<p><i>Elymus trachycaulus </i>subsp.<i> trachycaulus</i> grows throughout the habitat and range of the species, and exhibits considerably more variation than <i></i>subsp.<i> subsecundus</i>. Two aspects of the variation that seem particularly worthy of further study are the glume venation and the spacing of spikelets in the spikes. Plants with glumes having 5-7 well-developed, narrowly spaced veins are restricted to lower elevations and the southern portion of the subspecies range; northern plants and plants at higher elevations generally have 3-5 weakly developed and widely spaced veins. The former glumes resemble those of <i>E. glaucus</i>, with which <i>E. trachycaulus </i>subsp.<i> trachycaulus</i> is often sympatric; the latter, those of <i>E. violaceus</i> (p. 324). Spikelet spacing also varies considerably. In at least some instances, plants with widely spaced spikelets appear to be associated with more shady habitats.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Elymus trachycaulus subsp. trachycaulus
|author=
|authority=unknown
|rank=subspecies
|parent rank=species
|synonyms=Agropyron trachycaulum var. novae-angliae;Elymus trachycaulus subsp. teslinensis;Elymus trachycaulus subsp. novae-angliae;Elymus trachycaulus subsp. major;Agropyron trachycaulum var. typicum;Agropyron trachycaulum var. pilosiglume;Agropyron trachycaulum var. majus;Agropyron teslinense;Agropyron tenerum;Agropyron pauciflorum;Agropyron caninum var. tenerum;Agropyron caninum var. majus;Agropyron caninum subsp. majus;Agropyron caninum var. bornemannii
|basionyms=
|family=Poaceae
|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_453.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Triticeae
|genus=Elymus
|species=Elymus trachycaulus
|subspecies=Elymus trachycaulus subsp. trachycaulus
}}<!--

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