Pappophorum vaginatum Buckley, Prelim. Rep. Surv. Texas: App. 1. 1866 sec. Dávila & al. 2018
- =Pappophorum apertum Munro ex Scribn. in Bull. Torrey Bot. Club 9: 148. 1882 syn. sec. Dávila & al. 2006
- =Pappophorum apertum var. vaginatum (Buckley) Scribn. ex L.H. Dewey in Contr. U.S. Natl. Herb. 2(3): 535. 1894 syn. sec. Dávila & al. 2006
- =Pappophorum subbulbosum Arechav. in Anales Mus. Nac. Montevideo 1: 405, t. 48. 1896 syn. sec. Dávila & al. 2006
- =Pappophorum mucronulatum f. elatior Stuck. in Anales del Museo Nacional de Buenos Aires 11: 123. 1904 syn. sec. Dávila & al. 2006