View source for Achnatherum occidentale subsp. pubescens

{{Treatment/ID
|accepted_name=Achnatherum occidentale subsp. pubescens
|accepted_authority=(Vasey)
|publications=
|common_names=Common western needlegrass
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Stipa occidentalis var. pubescens
|authority=
|rank=variety
}} {{Treatment/ID/Synonym
|name=Stipa lemmonii var. pubescens
|authority=
|rank=variety
}} {{Treatment/ID/Synonym
|name=Stipa elmeri
|authority=
|rank=species
}}
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Stipeae;Achnatherum;Achnatherum occidentale;Achnatherum occidentale subsp. pubescens
|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 Stipeae]]</div><div class="higher-taxon"><small>genus</small>[[Achnatherum]]</div><div class="higher-taxon"><small>species</small>[[Achnatherum occidentale]]</div><div class="higher-taxon"><small>subspecies</small>[[Achnatherum occidentale subsp. pubescens]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 123
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="culm height;culm thickness;culm thickness;basal internode pubescence"><b>Culms </b>32-120 cm tall, 0.8-1.3 (2) mm thick, basal internodes puberulent to pubescent.</span> <span class="statement" id="st-d0_s1" data-properties="basal sheath pubescence;basal sheath pubescence;basal sheath pubescence"><b>Basal </b>sheaths usually pubescent, sometimes densely pubescent, occasionally glabrous;</span> <span class="statement" id="st-d0_s2" data-properties="">collars often with tufts of hair at the sides;</span> <span class="statement" id="st-d0_s3" data-properties="blade width;adaxial surface pubescence">blades 1-3 mm wide, adaxial surfaces pubescent to pilose.</span> <span class="statement" id="st-d0_s4" data-properties="panicle some measurement"><b>Panicles </b>10-30 cm;</span> <span class="statement" id="st-d0_s5" data-properties="longest branch some measurement">longest branches 2-7 cm.</span> <span class="statement" id="st-d0_s6" data-properties="glume coloration"><b>Glumes </b>usually green;</span> <span class="statement" id="st-d0_s7" data-properties="basal awn pubescence">lemmas with apical pubescence similar in length to the basal awn pubescence;</span> <span class="statement" id="st-d0_s8" data-properties="awn some measurement;awn pubescence;segment quantity;hair height or length or size">awns 24-50 mm, pilose on the first 2 segments, with hairs gradually becoming shorter distally, terminal segment scabrous or glabrous.</span> <span class="statement" id="st-d0_s9" data-properties="terminal segment pubescence;terminal segment pubescence;2n chromosome quantity">2n = 36.</span><!--

-->{{Treatment/Body
|discussion=<p>Achnatherum occidentale subsp. pubescens grows from Washington to California and eastward to Wyoming, at 1300-4700 m. It is the most widespread and variable subspecies of A. occidentale, intergrading with subsp. californicum, A. nelsonii, and A. lettermanii. It differs from the latter two in its shorter paleas and its pilose awns.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Achnatherum occidentale subsp. pubescens
|authority=(Vasey)
|rank=subspecies
|parent rank=species
|synonyms=Stipa occidentalis var. pubescens;Stipa lemmonii var. pubescens;Stipa elmeri
|basionyms=
|family=Poaceae
|illustrator=Cindy Roché
|illustration copyright=Utah State University
|reference=None
|publication title=
|publication year=
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V24/V24_171.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Stipeae
|genus=Achnatherum
|species=Achnatherum occidentale
|subspecies=Achnatherum occidentale subsp. pubescens
|2n chromosome quantity=36
|adaxial surface pubescence=pubescent;pilose
|awn pubescence=pilose
|awn some measurement=24mm;50mm
|basal awn pubescence=pubescence
|basal internode pubescence=puberulent;pubescent
|basal sheath pubescence=glabrous;pubescent;pubescent
|blade width=1mm;3mm
|culm height=32cm;120cm
|culm thickness=0.8mm;1.3mm
|glume coloration=green
|hair height or length or size=shorter
|longest branch some measurement=2cm;7cm
|panicle some measurement=10cm;30cm
|segment quantity=2
|terminal segment pubescence=glabrous;scabrous
}}<!--

-->[[Category:Treatment]][[Category:Achnatherum occidentale]]