Gymnocalycium monvillei subsp. gertrudae (Neuhuber) Neuhuber in Gymnocalycium 12: 286. 1999
Gymnocalycium monvillei subsp. gertrudae in Gymnocalycium 12: 286. 1999
is new combination for Gymnocalycium monvillei var. gertrudae in Gymnocalycium 6: 110. 1993