Gymnocalycium gibbosum var. hyptiacanthum (Lem.) Y.Itô, Saboten: 89. 1962 Gymnocalycium gibbosum var. hyptiacanthum (Lem.) Y.Itô, Saboten: 89. 1962is new combination for Echinocactus hyptiacanthus Lem., Cact. Gen. Sp. Nov.: 21. 1839Taxon for this nameGymnocalycium gibbosum var. hyptiacanthum (Lem.) Y.Itô