Echinocactus hexaedrophorus f. fossulatus (Scheidw.) Voss, Vilm. Blumengärtn., ed. 3, 1: 373. 1894
Echinocactus hexaedrophorus f. fossulatus, Vilm. Blumengärtn., ed. 3, 1: 373. 1894
is new combination for Echinocactus fossulatus in Allg. Gartenzeitung 9: 49. 1841