Pennisetum complanatum (Nees) Hemsl., Biol. Cent.-Amer., Bot. 3(19): 507. 1885 sec. Dávila & al. 2006
- ≡Gymnothrix complanata Nees in Bonplandia 3: 83. 1855 syn. sec. Dávila & al. 2006
- =Gymnotrix complanata Nees in Bonplandia (Hannover) 3: 83. 1855 syn. sec. Dávila & al. 2006
- =Gymnotrix grisebachiana E. Fourn., Mexic. Pl. 2: 48. 1886 syn. sec. Dávila & al. 2006
- =Gymnotrix mexicana E. Fourn., Mexic. Pl. 2: 48. 1886 syn. sec. Dávila & al. 2006