Synonyms
Gymnocalycium friedrichii (Werderm.) Pazout ex Schütz
Gymnocalycium mihanovichii var. friedrichii Werderm.
Gymnocalycium anisitsii subsp. volkeri Amerh.
Gymnocalycium friedrichii subsp. stenopleurum (F.Ritter) Schädlich
Gymnocalycium mihanovichii var. angustostriatum Pazout
Gymnocalycium friedrichii var. angustostriatum Pazout ex Milt
Gymnocalycium mihanovichii var. piraretaense Pazout
Gymnocalycium mihanovichii var. albiflorum Pazout