Gymnocalycium fidaianum (Backeb.) Hutchison in Cact. Succ. J. (Los Angeles) 29: 11. 1957
Gymnocalycium fidaianum in Cact. Succ. J. (Los Angeles) 29: 11. 1957
is new combination for Echinocactus fidaianus in Kakteen-Freund 1: 104, 117. 1933
Gymnocalycium fidaianum in Cact. Succ. J. (Los Angeles) 29: 11. 1957