View source for Elymus sierrae

{{Treatment/ID
|accepted_name=Elymus sierrae
|accepted_authority=Gould
|publications=
|common_names=Sierra wheatgrass
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Agropyron pringlei
|authority=
|rank=species
}}
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Triticeae;Elymus;Elymus sierrae
|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 sierrae]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 332
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>cespitose, not rhizomatous. <b>Culms</b> 20-50 cm, prostrate or decumbent and geniculate; nodes 1-2, exposed, glabrous. <b>Leaves</b> basally concentrated; sheaths glabrous; auricles usually present, to 1 mm on the lower leaves; ligules 0.2-0.5 mm, erose; blades 1-5 mm wide, flat, abaxial surfaces smooth, glabrous, adaxial surfaces prominently ridged over the veins, with scattered hairs, hairs to 0.2 mm, veins closely spaced. <b>Spikes</b> 5-15 cm long, 1.5-2.5 cm wide including the awns, 0.7-1.2 cm wide excluding the awns, flexuous, erect to nodding distally, with 1 spikelet at most nodes, occasionally some of the lower nodes with 2 spikelets; internodes 5-15 mm long, 0.2-0.5 mm wide, both surfaces glabrous, edges ciliate, not scabrous. <b>Spikelets</b> 15-20 mm, ascending to divergent, with 3-7 florets; rachillas glabrous; disarticulation above the glumes, beneath each floret. <b>Glumes</b> subequal, 6-9 mm long, 0.7-1 mm wide, lanceolate, glabrous, the bases evidently veined, apices entire, tapering into a 3-10 mm awn; lemmas 12-16 mm, glabrous, sometimes scabridulous, apices bidentate, awned, awns 15-30 mm, arcuately diverging to strongly recurved; paleas subequal to the lemmas, apices about 0.4 mm wide; anthers 2-3.5 mm. <b>2n</b> = 28.</span><!--

-->{{Treatment/Body
|discussion=<p><i>Elymus sierrae</i> is best known from rocky slopes and ridgetops in the Sierra <i>Nevada</i>, at 2100-3400 m, and is also found in Washington and Oregon. It resembles <i>E. scribneri</i> (see previous), differing in its non-disarticulating rachises, longer rachis internodes, and longer anthers. Hybrids with <i>E. elymoides</i> (p. 318) have glumes with awns 15+ mm long, and some spikelets with narrower glume bases and shorter anthers. Specimens with wide-margined glumes suggest hybridization with <i>E. violaceus</i> (p. 324).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Elymus sierrae
|authority=Gould
|rank=species
|parent rank=genus
|synonyms=Agropyron pringlei
|basionyms=
|family=Poaceae
|illustrator=Cindy Roché;Annaliese Miller
|illustration copyright=Utah State University
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V24/V24_471.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Triticeae
|genus=Elymus
|species=Elymus sierrae
}}<!--

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