Gymnocalycium obductum Piltz in Succulenta (Netherlands) 69: 75. 1990 Gymnocalycium obductum Piltz in Succulenta (Netherlands) 69: 75. 1990is basionym for Gymnocalycium stellatum var. obductum (Piltz) H.Till & W.Till in Gymnocalycium 9: 174. 1996Taxon for this nameGymnocalycium obductum Piltz