Gymnocalycium hossei var. nidulans (Backeb.) H.Till in Gymnocalycium 21 (Sonderausgabe): 816. 2008
Gymnocalycium hossei var. nidulans in Gymnocalycium 21 (Sonderausgabe): 816. 2008
is new combination for Gymnocalycium nidulans, Kaktus-ABC: 293. 1936 ["1935"]