Gymnocalycium berchtii var. nataliae (Neuhuber) Milt in Cactaceae Syst. Init. 25: 116. 2015 Gymnocalycium berchtii var. nataliae (Neuhuber) Milt in Cactaceae Syst. Init. 25: 116. 2015is new combination for Gymnocalycium nataliae Neuhuber in Gymnocalycium 18: 635. 2005Taxon for this nameGymnocalycium berchtii var. nataliae (Neuhuber) Milt