Aristida purpurea var. parishii (Hitchc.) Allred Aristida purpurea var. parishii (Hitchc.) Allred in Brittonia 36(4): 392. 1984 sec. Dávila & al. 2018≡Aristida parishii Hitchc., Fl. Calif. 1: 101. 1912 syn. sec. Dávila & al. 2006