View source for Psathyrostachys

{{Treatment/ID
|accepted_name=Psathyrostachys
|accepted_authority=Nevski
|publications=
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Triticeae;Psathyrostachys
|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>[[Psathyrostachys]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 372
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; cespitose, forming dense to loose clumps, sometimes stoloniferous, sometimes rhizomatous. <b>Culms</b> 15-120 cm, erect or decumbent. <b>Sheaths</b> of the basal leaves closed, becoming fibrillose, of the upper cauline leaves open; auricles sometimes present; ligules 0.2-0.3 mm, membranous; blades with prominently ribbed veins on the adaxial surfaces. <b>Inflorescences</b> spikes, with 2-3 spikelets per node; disarticulation in the rachises. <b>Spikelets</b> appressed to ascending, with 1-2(3) florets, often with additional reduced florets distally. <b>Glumes</b> equal to unequal, (3.5)4.2-48.5(65) mm including the awns, subulate, stiff, scabrous to pubescent, obscurely 1-veined, not united at the base; lemmas 5.5-14.3 mm, narrowly elliptic, rounded, glabrous or pubescent, 5-7-veined, veins often prominent distally, apices sharply acute to awned, sometimes with a minute tooth on either side of the awn base, awns 0.8-34 mm, straight, ascending to slightly divergent, sometimes violet-tinged; paleas equaling or slightly longer than the lemmas, membranous, scabrous or pilose on and sometimes also between the keels, bifid; anthers 3, 2.5-6.8(7) mm, yellow or violet; lodicules 2, acute, entire, ciliate. <b>Caryopses</b> pubescent distally, tightly enclosed by the lemmas and paleas at maturity, x = 7.</span><!--

-->{{Treatment/Body
|distribution=Minn.;Colo.;N.Mex.;Tex.;Utah;Alaska;Alta.;Man.;Sask.;Yukon;Mont.;Wyo.;Wash.;Ariz.;N.Dak.;Nebr.;S.Dak.
|discussion=<p><i>Psathyrostachys</i> has eight species, all of which are native to arid regions of central Asia, from eastern Turkey to eastern Siberia, Russia, and Xinjiang Province, China. One species, <i>P. juncea</i>, was introduced to North America as a potential forage species, and is now established in the Flora region.</p><!--
--><p><i>Psathyrostachys</i> is very similar to <i>Leymus</i>, particularly the cespitose species of <i>Leymus</i>. The major differences are that <i>Psathyrostachys</i> has disarticulating rachises and, usually, distinctly awned lemmas.</p>
|tables=
|references={{Treatment/Reference
|id=anamthawat-jonsson2005b
|text=Anamthawat-Jonsson, K. 2005. The Leymus Ns-genome. Czech J. Genet. PI. Breed. «(Special Issue):13-20
}}{{Treatment/Reference
|id=baden1991a
|text=Baden, C. 1991. A taxonomic revision of Psathyrostachys (Poaceae). Nordic J. Bot 11:3-26
}}{{Treatment/Reference
|id=bodvarsdottir2003b
|text=Bodvarsdottir, S.K. and K. Anamthawat-Jonsson. 2003. Isolation, characterization, and analysis of Leymus-specific DNA sequences. Genome 46:673-682.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Psathyrostachys
|author=Claus Badenf;
|authority=Nevski
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Poaceae
|distribution=Minn.;Colo.;N.Mex.;Tex.;Utah;Alaska;Alta.;Man.;Sask.;Yukon;Mont.;Wyo.;Wash.;Ariz.;N.Dak.;Nebr.;S.Dak.
|reference=anamthawat-jonsson2005b;baden1991a;bodvarsdottir2003b
|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_536.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Triticeae
|genus=Psathyrostachys
}}<!--

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