Difference between revisions of "×elyleymus aristatus"

(Merr.) Barkworth & D.R. Dewey
Synonyms: Elymus aristatus unknown
Treatment appears in FNA Volume 24. Treatment on page 344.
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|distribution=Colo.;Wash.;Calif.;Oreg.;Wyo.;Idaho;Nev.
 
|distribution=Colo.;Wash.;Calif.;Oreg.;Wyo.;Idaho;Nev.
|discussion=<p>Dewey and Holmgren (1962) argued that ×Elyleymus aristatus comprises hybrids between Elymus elymoides and Leymus cinereus or L. triticoides. It has been found at many locations where the parents are sympatric.</p>
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|discussion=<p>Dewey and Holmgren (1962) argued that ×Elyleymus aristatus comprises hybrids between <i>Elymus elymoides</i> and <i>Leymus cinereus</i> or <i>L. triticoides</i>. It has been found at many locations where the parents are sympatric.</p>
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V24/V24_490.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V24/V24_490.xml
 
|subfamily=Poaceae subfam. Pooideae
 
|subfamily=Poaceae subfam. Pooideae
 
|tribe=Poaceae tribe Triticeae
 
|tribe=Poaceae tribe Triticeae

Revision as of 17:20, 18 September 2019

Please click on the illustration for a higher resolution version.
Illustrator: Bee F. Gunn

Copyright: Utah State University

Plants not or shortly rhizomatous. Culms 60-130 cm, glabrous. Leaves evenly distributed on the culms; sheaths smooth, glabrous; auricles poorly developed, to 0.5 mm; ligules 1-2.5 mm, scarious, rounded; blades about 5.5 mm wide, abaxial surfaces glabrous, mostly smooth, scabrous near the margins, adaxial surfaces scabridulous, primary veins separated by about 3 secondary veins. Inflorescences spikes, 6-15 cm long, 10-15 mm wide including the awns, 7-10 mm wide excluding the awns, erect, with 2-3 sessile or subsessile spikelets per node; internodes 4-7 mm, concealed by the spikelets; disarticulation tardy, in the rachises and beneath the florets. Spikelets 10-20 mm excluding the awns, to 18 mm including the awns, with 3-4 florets. Glumes 8-15 mm long, 0.3-0.5 mm wide, subequal to unequal, scabrous; lemmas 7.5-12 mm, glabrous, smooth or scabrous, sometimes only scabrous distally, midveins prominent and scabrous distally, awns 4-5 mm; anthers 2.2-2.4 mm.

Distribution

Colo., Wash., Calif., Oreg., Wyo., Idaho, Nev.

Discussion

Dewey and Holmgren (1962) argued that ×Elyleymus aristatus comprises hybrids between Elymus elymoides and Leymus cinereus or L. triticoides. It has been found at many locations where the parents are sympatric.

Selected References

None.

Lower Taxa

None.