View source for Thinopyrum

{{Treatment/ID
|accepted_name=Thinopyrum
|accepted_authority=Á. Löve
|publications=
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Triticeae;Thinopyrum
|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>[[Thinopyrum]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 373
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; cespitose or not, sometimes rhizomatous. <b>Culms</b> 10-250 cm, usually erect. <b>Sheaths</b> open, glabrous or ciliate; auricles 0.2-1.8 mm or absent; ligules membranous; blades convolute or flat. <b>Inflorescences</b> terminal, distichous spikes, usually not disarticulating at maturity, with 1 spikelet at all or most nodes; internodes 5-30 mm. <b>Spikelets</b> 1-3 times the length of the middle internodes, solitary, appressed to ascending, often diamond-shaped in outline and arching outwards at maturity; disarticulation tardy, usually beneath the florets, sometimes in the rachises. <b>Glumes</b> rectangular to lanceolate, narrowing beyond midlength, stiff, indurate to coriaceous, glabrous or with hairs, keeled or rounded at the base, usually more strongly keeled distally than proximally, 4-9-veined, midveins usually scabrous distally, margins often hyaline, apices truncate to acute, sometimes mucronate, unawned, without lateral teeth; lemmas 5-veined, coriaceous, glabrous or with hairs, truncate, obtuse, or acute, sometimes mucronate or awned, awns to 3 cm; anthers 3, 2.5-12 mm. <b>x</b> = 7.</span><!--

-->{{Treatment/Body
|distribution=Wash.;N.H.;Oreg.;Ariz.;N.Mex.;Wyo.;N.J.;Iowa;Kans.;Mont.;N.Dak.;Nebr.;S.Dak.;N.Y.;Pa.;Alta.;B.C.;N.B.;N.S.;Ont.;Que.;Sask.;Yukon;R.I.;Nev.;Colo.;Calif.;Ill.;Ga.;Idaho;Maine;Mass.;Tex.;Utah;Mo.;S.C.
|discussion=<p><i>Thinopyrum</i> includes approximately ten species, most of which are alkaline tolerant. It is native from the Mediterranean region to western Asia. Four species are established in the Flora region; only <i>T. intermedium</i> and <i>T. ponticum</i> are common. The genus is sometimes included in Elytrigia Desv. or <i>Elymus</i>.</p><!--
--><p><i>Thinopyrum</i> differs from the other Triticeae in its thick, stiff glumes and lemmas. These are several cells thick, even between the veins (Jarvie and Barkworth 1992b).</p>
|tables=
|references={{Treatment/Reference
|id=assasi1994a
|text=Assasi, M. 1994. The genus Elymus L. (Poaceae) in Iran: Biosystematic studies and generic delimitation. Ph.D. dissertation, Lund University, Lund, Sweden. 104 pp.
}}{{Treatment/Reference
|id=barkworth1997b
|text=Barkworth, M.E. 1997. Taxonomic and nomenclatural comments on the Triticeae in North America. Phytologia 83:302-311
}}{{Treatment/Reference
|id=darbyshire1997a
|text=Darbyshire, S.J. 1997. Tall Wheatgrass, Elymus elongatus subsp. ponticus, in Nova Scotia. Rhodora 99:161-165
}}{{Treatment/Reference
|id=jarvie1992a
|text=Jarvie, J.K. 1992. Taxonomy of Elytrigia sect. Caespitosae and sect. Junceae (Gramineae: Triticeae). Nordic J. Bot. 12:155-169
}}{{Treatment/Reference
|id=jarvie1992b
|text=Jarvie, J.K. and M.E. Barkworth. 1992a. Anatomical variation in some perennial Triticeae. Bot. J. Linn. Soc. 108:287-301
}}{{Treatment/Reference
|id=jarvie1992c
|text=Jarvie, J.K. and M.E. Barkworth. 1992b. Morphological variation and genome constitution in some perennial Triticeae. Bot. J. Linn. Soc. 108:167-189
}}{{Treatment/Reference
|id=liu1993b
|text=Liu, Z.W. and R.R.-C. Wang. 1993. Genome constitutions of Thinopyrum curvifolium, T. scirpeum, T. distichum, and T. junceum (Triticeae: Gramineae). Genome 36:641-651
}}{{Treatment/Reference
|id=ogle2001a
|text=Ogle, D. 2001. Intermediate wheatgrass, Thinopyrum intermedium (Host) Barkworth & D.R. Dewey. Plant Fact Sheet, U.S. Department of Agriculture, Natural Resource Conservation Service Plant Materials Program, http://plants.usda.gov.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Plants not rhizomatous; glumes truncate, midveins about equal in length and prominence to the lateral veins
|[[Thinopyrum ponticum|Thinopyrum ponticum]]
|-id=key-0-1
|1
|Plants rhizomatous; glumes obliquely truncate or obtuse to acute, midveins usually slightly longer and more prominent than the lateral veins.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Glumes 9-18 mm long
|[[Thinopyrum pycnanthum|Thinopyrum pycnanthum]]
|-id=key-0-2
|2
|Glumes 4.5-8.5 mm long.
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Lemmas 7.5-10 mm long, glabrous or hairy; rachis internodes 7-12 mm long; plants widespread in the Flora region, particularly in the western United States
|[[Thinopyrum intermedium|Thinopyrum intermedium]]
|-id=key-0-3
|3
|Lemmas 10-17 mm long, glabrous; rachis internodes 12-28 mm long; plants known only from a few coastal locations in the Flora region
|[[Thinopyrum junceum|Thinopyrum junceum]]
|}
</div></div><!--

-->{{#Taxon:
name=Thinopyrum
|author=Mary E. Barkworth;
|authority=Á. Löve
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Poaceae
|distribution=Wash.;N.H.;Oreg.;Ariz.;N.Mex.;Wyo.;N.J.;Iowa;Kans.;Mont.;N.Dak.;Nebr.;S.Dak.;N.Y.;Pa.;Alta.;B.C.;N.B.;N.S.;Ont.;Que.;Sask.;Yukon;R.I.;Nev.;Colo.;Calif.;Ill.;Ga.;Idaho;Maine;Mass.;Tex.;Utah;Mo.;S.C.
|reference=assasi1994a;barkworth1997b;darbyshire1997a;jarvie1992a;jarvie1992b;jarvie1992c;liu1993b;ogle2001a
|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_540.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Triticeae
|genus=Thinopyrum
}}<!--

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