Gymnocalycium schickendantzii
Gymnocalycium schickendantzii, Cactaceae 3: 164–165. 1922 sec. Demaio & al. 20111
- 1. 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