×Pseudelymus saxicola

(Scribn. & J.G. Sm.) Barkworth & D.R. Dewey
Synonyms: ×Agrositanion saxicola Elymus saxicola
Treatment appears in FNA Volume 24. Treatment on page 283.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants not rhizomatous. Culms 0.8-1 mm thick; ligules 0.2-0.4 mm; blades 1.5-2 mm wide. Spikes 7-14 cm, with 1 spikelet per node; internodes 7-9 mm. Spikelets 12-15 mm excluding the awns; disarticulation beneath the florets, sometimes also in the rachises. Glumes 15-21 mm including the awns, glume bodies 6-8 mm long, 0.7-1 mm wide, (1)3-4-veined; lemmas 10-11 mm excluding the awns, (14)18-37 mm including the awns, apices often bifid; anthers about 2.5 mm.

Distribution

Colo., N.Mex., Calif., Oreg., Wyo., Mont., Utah, Wash., Ariz., Idaho, Nev., S.Dak.

Discussion

×Pseudelymus saxicola consists of hybrids between Pseudoroegneria spicata and Elymus elymoides. It is a rather common hybrid in western North America. It differs from E. albicans, which is thought to be derived from hybrids between P. spicata and E. lanceolatus, in lacking rhizomes, having longer awns on its glumes and lemmas, and having disarticulating rachises. It is more likely to be confused with E. xsaundersii, but differs in its longer glume and lemma awns.

Selected References

None.

Lower Taxa

None.
... more about "×Pseudelymus saxicola"
Mary E. Barkworth +
(Scribn. & J.G. Sm.) Barkworth & D.R. Dewey +
Colo. +, N.Mex. +, Calif. +, Oreg. +, Wyo. +, Mont. +, Utah +, Wash. +, Ariz. +, Idaho +, Nev. +  and S.Dak. +
×Agrositanion saxicola +  and Elymus saxicola +
×Pseudelymus saxicola +
×pseudelymus +
species +