Synonyms: Agropyron angustiglume; Agropyron angustiglume irendykense; Agropyron caninum var. altaicum (homotypic); Agropyron ilmense; Agropyron mutabile (homotypic); Agropyron mutabile var. glabrum; Agropyron mutabile var. pilosum; Agropyron mutabile var. scabrum; Agropyron oschense (homotypic); Agropyron pallidissimum; Agropyron praecaespitosum; Agropyron transbaicalense; Agropyron transiliense; Elymus barbulatus; Elymus lineicus; Elymus marmoreus; Elymus mutabilis barbulatus (homotypic); Elymus mutabilis praecaespitosus; Elymus mutabilis transbaicalensis; Elymus mutabilis var. burjaticus; Elymus mutabilis var. irendykensis; Elymus mutabilis var. mutabilis; Elymus mutabilis var. nemoralis (homotypic); Elymus mutabilis var. oschensis; Elymus mutabilis var. praecaespitosus; Elymus occidentalialtaicus; Elymus pallidissimus; Elymus praecaespitosus; Elymus transbaicalensis; Elymus ubinicus; Goulardia mutabilis (homotypic); Goulardia praecaespitosa; Roegneria angustiglumis; Roegneria burjatica; Roegneria mutabilis (homotypic); Roegneria mutabilis var. nemoralis; Roegneria mutabilis var. varsugensis; Roegneria mutabilis varsugensis; Roegneria oschensis; Roegneria praecaespitosa; Roegneria transbaicalensis; Roegneria transiliensis; Triticum caninum var. altaicum; Triticum mutabile