Aristida longespica Poir., Encycl. Suppl. 1: 452. 1810 sec. Dávila & al. 2018
- =Aristida gracilis Elliott, Sketch Bot. S. Carolina 1(2): 142, pl. 8, f. 3. 1816 syn. sec. Dávila & al. 2006
- =Aristida geniculata Raf. in Amer. Monthly Mag. & Crit. Rev. 2(2): 119. 1817 syn. sec. Dávila & al. 2006
- =Trixostis gracilis Raf. in Bull. Bot. (Geneve) 1: 221. 1830 syn. sec. Dávila & al. 2006
- =Curtopogon gracilis Nees ex Trin. & Rupr., Sp. Gram. Stipac.: 101. 1842 syn. sec. Dávila & al. 2006
- =Aristida gracilis var. depauperata A. Gray, Manual (ed. 5): 618. 1867 syn. sec. Dávila & al. 2006
- =Aristida simpliciflora var. texana Vasey in Contr. U.S. Natl. Herb. 3(1): 44. 1892 syn. sec. Dávila & al. 2006