Gymnocalycium hyptiacanthum (Lem.) Britton & Rose, Cactaceae 3: 156. 1922
Gymnocalycium hyptiacanthum, Cactaceae 3: 156. 1922
is new combination for Echinocactus hyptiacanthus, Cact. Gen. Sp. Nov.: 21. 1839
Gymnocalycium hyptiacanthum, Cactaceae 3: 156. 1922