Muhlenbergia villiflora Hitchc. Muhlenbergia villiflora Hitchc., N. Amer. Fl. 17(6): 470. 1935 sec. Dávila & al. 2018=Vilfa pubescens E. Fourn., Mexic. Pl. 2: 102. 1886 syn. sec. Dávila & al. 2006