Achnatherum robustum (Vasey) Barkworth in Phytologia 74(1): 12. 1993 sec. Dávila & al. 2018
- =Stipa robusta (Vasey) Scribn. in Bull. Div. Agrostol., U.S.D.A. 5: 23. 1897 syn. sec. Dávila & al. 2006
- =Stipa vaseyi Scribn. in Bull. Div. Agrostol., U.S.D.A. 11: 46. 1898 syn. sec. Dávila & al. 2006
- =Stipa lobata Swallen in J. Wash. Acad. Sci. 23(10): 199, f. 2. 1933 syn. sec. Dávila & al. 2006
- =Achnatherum lobatum (Swallen) Barkworth in Phytologia 74(1): 9. 1993 syn. sec. Dávila & al. 2006