Echinocactus centeterius var. pachycentrus (Lehm. ex Pfeiff.) Salm-Dyck, Cact. Hort. Dyck., ed. 1849: 33. 1850
Echinocactus centeterius var. pachycentrus, Cact. Hort. Dyck., ed. 1849: 33. 1850
is new combination for Echinocactus pachycentrus, Enum. Diagn. Cact.: 66. 1837