Checklist » Poaceae » Leymus triticoides
Last updated 9/18/2020 by David Giblin.
Leymus triticoides (Buckley) Pilg.[FNA24, HC2]
beardless lyme grass, beardless wildrye

Publication: Bot. Jahrb. Syst. 74: 6. 1947.

Origin: Native

selected vouchers: WTU

Notes: FNA24: "Leymus triticoides grows in dry to moist, often saline meadows. Its range extends from southern British Columbia to Montana, south to California, Arizona, and New Mexico, but its populations are widely scattered. It is not known from Mexico. There is considerable variation within the species, but no pattern of variation suggesting the existence of infraspecific taxa is known. It is very similar to L. multicaulis, strains of which were initially released as L. triticoides by the U.S. Department of Agriculture. The most consistent differences between them appear to be in the venation of the leaf blades and the vestiture of the calluses. Leymus triticoides is also very similar to L. simplex, differing from it in the number of spikelets at the midspike nodes.

Leymus triticoides hybridizes with other species of Leymus; hybrids with L. mollis are called L. ×vancouverensis (see p. ??), those with L. condensatus are called L. ×multiflorus (see p. ??). Hybrids with L. cinereus are known, but have not been formally named. Plants identified as Elymus arenicolus Scribn. & J.G. Sm. are here included in L. flavescens, but may represent hybrids between L. triticoides and L. flavescens."

References: (none)

Synonyms & Misapplied Names:
Elymus condensatus J. Presl var. triticoides (Buckley) Thurb.
Elymus orcuttianus Vasey
Elymus triticoides Buckley[HC]
Elymus triticoides Buckley var. pubescens Hitchc.[HC]
Elymus triticoides Buckley var. triticoides[HC]