Piptochaetium brevicalyx (E. Fourn.) Ricker in Contr. U.S. Natl. Herb. 17(3): 286. 1913 sec. Dávila & al. 2018
- ≡Stipa brevicalyx E. Fourn., Mexic. Pl. 2: 150. 1886 syn. sec. Dávila & al. 2006
- =Oryzopsis fournieriana Hemsl., Biol. Cent.-Amer., Bot. 3(19): 538. 1885 syn. sec. Dávila & al. 2006