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World Checklist of Selected Plant Families (WCSP)

Agropyron glaucum var. occidentale Scribn., Trans. Kansas Acad. Sci. 9: 110 (1885).

This name is a synonym.

Accepted Name: Elymus smithii (Rydb.) Gould, Madroņo 9: 127 (1947).
Family: Poaceae
The Poaceae generic classification system originated from the GrassBase database, originally based on Genera Graminum (1985). Work is in progress to update this to a new globally accepted and collaborative generic classification based on the latest research.
Homotypic Names:

Agropyron occidentale (Scribn.) Scribn., Bull. Div. Agrostol. U.S.D.A. 27: 9 (1900).

Zeia occidentalis (Scribn.) Lunell, Amer. Midl. Naturalist 4: 226 (1915).

Original Compiler: W.D.Clayton, R.Govaerts, K.T.Harman, H.Williamson & M.Vorontsova