Gymnocalycium monvillei var. gertrudae Neuhuber in Gymnocalycium 6: 110. 1993 Gymnocalycium monvillei var. gertrudae Neuhuber in Gymnocalycium 6: 110. 1993is basionym for Gymnocalycium monvillei subsp. gertrudae (Neuhuber) Neuhuber in Gymnocalycium 12: 286. 1999Taxon for this nameGymnocalycium monvillei var. gertrudae Neuhuber