Elymus elymoides subsp. brevifolius (J.G. Sm.) Barkworth, Vasc. Pl. Wyoming: 298. 1988 sec. Dávila & al. 2018
- =Sitanion longifolium J.G. Sm. in Bull. Div. Agrostol., U.S.D.A. 18: 18. 1899 syn. sec. Dávila & al. 2006
- =Elymus brevifolius (J.G. Sm.) M.E. Jones in Contr. W. Bot. 14: 20. 1912 syn. sec. Dávila & al. 2006
- =Elymus longifolius (J.G. Sm.) Gould in Brittonia 26(1): 60. 1974 syn. sec. Dávila & al. 2006
- =Elymus elymoides var. brevifolius (J.G. Sm.) Dorn, Vasc. Pl. Wyoming: 298. 1988 syn. sec. Dávila & al. 2006