Gymnocalycium mihanovichii var. piraretaense Pazout in Kaktusář. Listy 16: 195. 1951 Gymnocalycium mihanovichii var. piraretaense Pazout in Kaktusář. Listy 16: 195. 1951Taxon for this nameGymnocalycium mihanovichii var. piraretaense Pazout
