Echinocactus pilosus var. stainesii Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 149. 1850
Echinocactus pilosus var. stainesii, Cact. Hort. Dyck., ed. 1849: 149. 1850
is basionym for Echinocactus pilosus f. stainesii, Vilm. Blumengärtn., ed. 3, 1: 372. 1894
is basionym for Ferocactus piliferus var. stainesii in Kakteen And. Sukk. 37: 45. 1986