Muhlenbergia dubia E. Fourn., Biol. Cent.-Amer., Bot. 3(29): 540. 1885 sec. Dávila & al. 2018
- =Muhlenbergia acuminata Vasey in Bot. Gaz. 11(12): 337-338. 1886 syn. sec. Dávila & al. 2006
- =Sporobolus ligulatus Vasey & L.H. Dewey in Contr. U.S. Natl. Herb. 1(8): 268. 1893 syn. sec. Dávila & al. 2006
- =Muhlenbergia firma Beal, Grass. N. Amer. 2: 243. 1896 syn. sec. Dávila & al. 2006
- =Sporobolus inflatus Vasey & L.H. Dewey ex Beal, Grass. N. Amer. 2: 289. 1896 syn. sec. Dávila & al. 2006
- =Muhlenbergia densiflora Scribn. & Merr. in Bull. Div. Agrostol., U.S.D.A. 24: 18, f. 4. 1901 syn. sec. Dávila & al. 2006