Difference between revisions of "×elyleymus"

B.R. Baum
Treatment appears in FNA Volume 24. Treatment on page 343.
imported>Volume Importer
m (Corrected capitalization of "Elyleymus" and italics in discussion)
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{{Treatment/ID
 
{{Treatment/ID
|accepted_name=×elyleymus
+
|accepted_name=×Elyleymus
 
|accepted_authority=B.R. Baum
 
|accepted_authority=B.R. Baum
 
|publications=
 
|publications=
 
|basionyms=
 
|basionyms=
 
|synonyms=
 
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Triticeae;×elyleymus
+
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Triticeae;×Elyleymus
|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>[[×elyleymus]]</div></div>
+
|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>[[×Elyleymus]]</div></div>
 
|volume=Volume 24
 
|volume=Volume 24
 
|mention_page=
 
|mention_page=
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-->{{Treatment/Body
 
-->{{Treatment/Body
 
|distribution=Colo.;Wash.;Alaska;Idaho;Alta.;B.C.;Ont.;Que.;Sask.;Yukon;Wyo.;Calif.;Nev.;Oreg.
 
|distribution=Colo.;Wash.;Alaska;Idaho;Alta.;B.C.;Ont.;Que.;Sask.;Yukon;Wyo.;Calif.;Nev.;Oreg.
|discussion=<p>×Elyleymus consists of hybrids between <i>Elymus</i> and <i>Leymus</i>. So far as is known, they are completely sterile, having thin anthers (usually less than 0.5 mm thick) and failing to develop mature caryopses. Only the named hybrids are accounted for below. Each of the entities appears to be distinct, but identification of the parents is, in some instances, tentative. The descriptions are offered with considerable reservation, some being based solely on the type material. All the illustrations are based on type specimens.</p><!--
+
|discussion=<p>×<i>Elyleymus</i> consists of hybrids between <i>Elymus</i> and <i>Leymus</i>. So far as is known, they are completely sterile, having thin anthers (usually less than 0.5 mm thick) and failing to develop mature caryopses. Only the named hybrids are accounted for below. Each of the entities appears to be distinct, but identification of the parents is, in some instances, tentative. The descriptions are offered with considerable reservation, some being based solely on the type material. All the illustrations are based on type specimens.</p><!--
 
--><p>The hybrids fall into two groups. Those with <i>Leymus mollis</i> as the <i>Leymus</i> parent (species 7-11) tend to have wider and flatter glumes than those with one of the inland species of <i>Leymus</i> as the <i>Leymus</i> parent.</p><!--
 
--><p>The hybrids fall into two groups. Those with <i>Leymus mollis</i> as the <i>Leymus</i> parent (species 7-11) tend to have wider and flatter glumes than those with one of the inland species of <i>Leymus</i> as the <i>Leymus</i> parent.</p><!--
 
--><p>Unless stated otherwise, measurements of the spikes include the awns; measurements of the spikelets, glumes, and lemmas do not. No attempt has been made to develop distribution maps.</p>
 
--><p>Unless stated otherwise, measurements of the spikes include the awns; measurements of the spikelets, glumes, and lemmas do not. No attempt has been made to develop distribution maps.</p>
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}}{{Treatment/Reference
 
}}{{Treatment/Reference
 
|id=dewey1962a
 
|id=dewey1962a
|text=Dewey, D.R. and A.H. Holmgren. 1962. Natural hybrids of Elytnus cinereus and Sitanion hystrix. Bull. Torrey Bot. Club 89:217-228
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|text=Dewey, D.R. and A.H. Holmgren. 1962. Natural hybrids of Elymus cinereus and Sitanion hystrix. Bull. Torrey Bot. Club 89:217-228
 
}}{{Treatment/Reference
 
}}{{Treatment/Reference
 
|id=lepage1952b
 
|id=lepage1952b
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-->{{#Taxon:
 
-->{{#Taxon:
name=×elyleymus
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name=×Elyleymus
 
|author=Mary E. Barkworth;
 
|author=Mary E. Barkworth;
 
|authority=B.R. Baum
 
|authority=B.R. Baum
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|subfamily=Poaceae subfam. Pooideae
 
|subfamily=Poaceae subfam. Pooideae
 
|tribe=Poaceae tribe Triticeae
 
|tribe=Poaceae tribe Triticeae
|genus=×elyleymus
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|genus=×Elyleymus
 
}}<!--
 
}}<!--
  
 
-->[[Category:Treatment]][[Category:Poaceae tribe Triticeae]]
 
-->[[Category:Treatment]][[Category:Poaceae tribe Triticeae]]

Revision as of 16:19, 1 December 2021

Plants perennial; sometimes rhizomatous. Culms 40-235 cm, erect. Inflorescences usually spikes, sometimes spikelike racemes, 5-35 cm, erect, with 1-3 spikelets per node, pedicels, when present, to 3 mm. Spikelets with 2-8 florets; disarticulation usually above the glumes and beneath the florets, sometimes below the glumes, sometimes in the rachises, usually tardy. Glumes linear to lanceolate, often awn-tipped; lemmas 6-25 mm, glabrous or hairy, usually awned, awns to 15 mm; anthers 1.5-5 mm.

Distribution

Colo., Wash., Alaska, Idaho, Alta., B.C., Ont., Que., Sask., Yukon, Wyo., Calif., Nev., Oreg.

Discussion

×Elyleymus consists of hybrids between Elymus and Leymus. So far as is known, they are completely sterile, having thin anthers (usually less than 0.5 mm thick) and failing to develop mature caryopses. Only the named hybrids are accounted for below. Each of the entities appears to be distinct, but identification of the parents is, in some instances, tentative. The descriptions are offered with considerable reservation, some being based solely on the type material. All the illustrations are based on type specimens.

The hybrids fall into two groups. Those with Leymus mollis as the Leymus parent (species 7-11) tend to have wider and flatter glumes than those with one of the inland species of Leymus as the Leymus parent.

Unless stated otherwise, measurements of the spikes include the awns; measurements of the spikelets, glumes, and lemmas do not. No attempt has been made to develop distribution maps.

... more about "×Elyleymus"
Mary E. Barkworth +
B.R. Baum +
Colo. +, Wash. +, Alaska +, Idaho +, Alta. +, B.C. +, Ont. +, Que. +, Sask. +, Yukon +, Wyo. +, Calif. +, Nev. +  and Oreg. +
barkworth2006b +, bowden1959a +, bowden1967b +, dewey1962a +  and lepage1952b +
Gramineae +
×Elyleymus +
Poaceae tribe Triticeae +