Muhlenbergia mutica (Rupr. ex E. Fourn.) Hitchc. Muhlenbergia mutica (Rupr. ex E. Fourn.) Hitchc., N. Amer. Fl. 17: 459. 1935 sec. Dávila & al. 2018≡Epicampes mutica Rupr. ex E. Fourn., Mexic. Pl. 2: 87. 1886 syn. sec. Dávila & al. 2006