Gymnocalycium occultum Frič ex Schütz in Friciana 7: 4. 1962 Gymnocalycium occultum Frič ex Schütz in Friciana 7: 4. 1962is new combination for Gymnocalycium stellatum subsp. occultum Frič ex H.Till & W.Till in Gymnocalycium 9: 176. 1996Taxon for this nameGymnocalycium occultum Frič ex Schütz