Publication: Bull. Div. Agrostol., U.S.D.A. 11: 56, f. 12. 1898.
selected vouchers: WTU
Notes: FNA24: "Elymus ×hansenii refers to hybrids between E. glaucus and either E. elymoides or E. multisetus. It is not clear which of the latter two species is involved. It is a fairly common hybrid in those parts of western North America where both parents grow. The glumes of the type specimen are as wide as those in E. glaucus, and some are divided longitudinally, as in E. elymoides and E. multisetus. As in other hybrids involving E. elymoides and E. multisetus, the rachis of E. ×hansenii disarticulates at maturity."