Elymus ×pseudorepens (Scribn. & J.G. Sm.) Barkworth in Great Basin Naturalist 43(4): 568. 1983 sec. Dávila & al. 2006
- ≡Agropyron ×pseudorepens Scribn. & J.G. Sm. in Bull. Div. Agrostol. U.S.D.A. 4: 34. 1897 syn. sec. Dávila & al. 2006
- =Triticum vaillantianum Wulfen, Fl. Erlang. 1: 143. 1811 syn. sec. Dávila & al. 2006
- =Agropyron repens var. vaillantianum (Wulfen & Schreb.) Roem. & Schult., Syst. Veg. 2: 755. 1817 syn. sec. Dávila & al. 2006
- =Agropyron vaillantianum (Wulfen & Schreb.) Trautv. in Trudy Imp. S.-Peterburgsk. Bot. Sada 9: 323. 1884 syn. sec. Dávila & al. 2006
- =Agropyron pseudorepens Scribn. & J.G. Sm. in Bull. Div. Agrostol., U.S.D.A. 4: 34. 1897 syn. sec. Dávila & al. 2006
- =Agropyron pseudorepens var. magnum Scribn. & J.G. Sm. in Bull. Div. Agrostol. U.S.D.A. 4: 35. 1897 syn. sec. Dávila & al. 2006
- =Agropyron tenerum subsp. magnum (Scribn. & J.G. Sm.) Piper in Bull. Torrey Bot. Club 32: 546. 1905 syn. sec. Dávila & al. 2006
- =Zeia pseudorepens (Scribn. & J.G. Sm.) Lunell in Amer. Midl. Naturalist 4: 226. 1915 syn. sec. Dávila & al. 2006
- =Agropyron repens f. vaillantianum (Wulfen & Schreb.) Fernald in Rhodora 35: 184. 1933 syn. sec. Dávila & al. 2006
- =Elytrigia repens var. vaillantianum (Wulfen & Schreb.) Prokudin in Trudy Naucho-Issl. Inst. Bot. 3: 189. 1938 syn. sec. Dávila & al. 2006
- =Elymus pauciflorus subsp. pseudorepens (Scribn. & J.G. Sm.) Gould in Madroño 10: 94. 1949 syn. sec. Dávila & al. 2006
- =Agropyron trachycaulum f. pseudorepens (Scribn. & J.G. Sm.) Beetle in Rhodora 54: 196. 1952 syn. sec. Dávila & al. 2006
- =Agropyron pseudorepens var. sennii B. Boivin in Naturaliste Canad. 94: 520. 1967 syn. sec. Dávila & al. 2006
- =Elytrigia vaillantianum (Wulfen & Schreb.) Beetle in Phytologia 55(3): 211. 1984 syn. sec. Dávila & al. 2006
- =Elymus vaillantianus (Wulfen & Schreb.) K.B. Jensen in Genome 32(4): 645. 1989 syn. sec. Dávila & al. 2006