Gymnocalycium castellanosii subsp. armillatum (Piltz) Papsch in Cactus & Co. 12: 200. 2008
Gymnocalycium castellanosii subsp. armillatum in Cactus & Co. 12: 200. 2008
is new combination for Gymnocalycium castellanosii var. armillatum in Gymnos 9(18): 48. 1993