Gymnocalycium vorwerkii (Frič) Hutchison in Natl. Cact. Succ. J. 14: 38. 1959 Gymnocalycium vorwerkii (Frič) Hutchison in Natl. Cact. Succ. J. 14: 38. 1959is new combination for Neowerdermannia vorwerkii Frič in Kaktusář 11: 85. 1930Taxon for this nameGymnocalycium vorwerkii (Frič) Hutchison