Muhlenbergia ligulata (E. Fourn.) Scribn. & Merr. Muhlenbergia ligulata (E. Fourn.) Scribn. & Merr. in Bull. Div. Agrostol., U.S.D.A. 24: 19. 1901 sec. Dávila & al. 2018≡Chaboissaea ligulata E. Fourn., Mexic. Pl. 2: 112, t. 1. 1886 syn. sec. Tropicos 2013