Gymnocalycium berchtii
Gymnocalycium berchtii in Gymnocalycium 10(3): 219. 1997 sec. Charles 20091
- =Echinocactus platensis var. terweemeanus in Succulenta (Netherlands) 12(7): 137. 1930 syn. sec. Demaio & al. 20112
- ≡Gymnocalycium terweemeanum in Gymnos 13: 47. 1997 syn. sec. Hunt 20163
- ≡Gymnocalycium quehlianum var. terweemeanum in Gymnocalycium 20: 730. 2007 syn. sec. Kew WCVP (2019)4
- 2. Demaio, P., Barfuss, M. H. J., Kiesling, R., Till, W. & Chiapella, J. 2011: Molecular phylogeny of Gymnocalycium (Cactaceae): assessment of alternative infrageneric systems, a new subgenus, and trends in the evolution of the genus. – American Journal of Botany 98(11): 1841-1854. http://doi.org/10.3732/ajb.1100054, 3. Hunt, D.R. 2016: CITES Cactaceae Checklist. 3rd edition. – published by the author, 4. Kew WCVP (2019)
- =Gymnocalycium poeschlii in Gymnocalycium 12: 297. 1999 syn. sec. Hunt 20165
- =Gymnocalycium morroense in Gymnocalycium 23: 948. 2010 syn. sec. Kew WCVP (2019)7