Aristida purpurea var. wrightii (Nash) Allred Aristida purpurea var. wrightii (Nash) Allred in Brittonia 36: 393. 1984 sec. Dávila & al. 2018≡Aristida wrightii Nash, Fl. S.E. U.S.: 116, 1327. 1903 syn. sec. Dávila & al. 2006