Aristida purpurascens Poir., Encycl. Suppl. 1: 452. 1810 sec. Dávila & al. 2018
- =Chaetaria purpurascens (Poir.) P. Beauv., Ess. Agrostogr.: 30, 152, 158. 1812 syn. sec. Dávila & al. 2006
- =Aristida racemosa Muhl., Descr. Gram.: 172. 1817 syn. sec. Dávila & al. 2006
- =Chaetaria affinis Schult., Mant. 210. 1824 syn. sec. Dávila & al. 2006
- =Aristida affinis (Schult.) Kunth, Révis. Gramin. 1: 61. 1829 syn. sec. Dávila & al. 2006
- =Aristida purpurascens var. alabamensis Trin. & Rupr., Sp. Gram. Stipac.: 102. 1842 syn. sec. Dávila & al. 2006
- =Aristida elliotiana Steud., Syn. Pl. Glumac. 1: 133. 1855 syn. sec. Dávila & al. 2006
- =Aristida geyeriana Steud., Syn. Pl. Glumac. 1: 133. 1855 syn. sec. Dávila & al. 2006
- =Aristida purpurascens var. minor Vasey in Contr. U.S. Natl. Herb. 3(1): 46. 1892 syn. sec. Dávila & al. 2006
- =Aristida purpurascens var. glaucissima Kearney ex Scribn. & Ball in Bull. Div. Agrostol., U.S.D.A. 24: 45. 1901 syn. sec. Dávila & al. 2006