Echinocactus hexaedrophorus Lem., Cact. Gen. Sp. Nov.: 27–28. 1839

is basionym for Thelocactus hexaedrophorus (Lem.) Britton & Rose in Bull. Torrey Bot. Club 49: 251. 1922

is basionym for Echinofossulocactus hexaedrophorus (Lem.) Lawr. in Gard. Mag. (London) 17: 318. 1841

Taxon for this name