Muhlenbergia filiformis (Thurb. ex S. Watson) Rydb. in Bull. Torrey Bot. Club 32(11): 600. 1905 sec. Dávila & al. 2018
- ≡Vilfa depauperata var. filiformis Thurb. ex S. Watson, Botany (Fortieth Parallel): 376. 1871 syn. sec. Dávila & al. 2006
- =Vilfa gracillima Thurb. ex S. Watson, Bot. California 2: 268. 1880 syn. sec. Dávila & al. 2006
- =Sporobolus gracillimus (Thurb. ex S. Watson) Vasey, Descr. Cat. Grass. U.S.: 44. 1885 syn. sec. Dávila & al. 2006
- =Sporobolus filiformis (Thurb. ex S. Watson) Rydb. in Contr. U.S. Natl. Herb. 3(3): 189. 1895 syn. sec. Dávila & al. 2006
- =Sporobolus depauperatus var. filiformis Beal, Grass. N. Amer. 2: 296. 1896 syn. sec. Dávila & al. 2006
- =Sporobolus simplex Scribn. in Bull. Div. Agrostol., U.S.D.A. 11: 48-49, f. 6. 1898 syn. sec. Dávila & al. 2006
- =Sporobolus aristatus Rydb. in Bull. Torrey Bot. Club 28(5): 266. 1901 syn. sec. Dávila & al. 2006
- =Sporobolus simplex var. thermale Merr. in Rhodora 4(39): 48. 1902 syn. sec. Dávila & al. 2006
- =Muhlenbergia aristulata Rydb. in Bull. Torrey Bot. Club 32(11): 600. 1905 syn. sec. Dávila & al. 2006
- =Muhlenbergia simplex (Scribn.) Rydb. in Bull. Torrey Bot. Club 32(11): 600. 1905 syn. sec. Dávila & al. 2006
- =Muhlenbergia idahoensis H. St. John, Fl. S.-E. Washington: 50. 1937 syn. sec. Dávila & al. 2006