Tephrocactus geometricus
Tephrocactus geometricus, Kaktus-ABC: 111. 1936 ["1935"] sec. Las Peñas & al. 20191 wfo-0001289338
- ≡Opuntia geometrica in Kakteenkunde 1934: 172. 1934 syn. sec. ??? wfo-0001289337
- ≡Tephrocactus alexanderi subsp. geometricus in Cactology 5 (Suppl. III): 2. 2016 syn. sec. ??? wfo-0001434304
- 1. Las Peñas, M.L., Kiesling, R. & Bernardello, G. 2019: Phylogenetic reconstruction of the genus Tephrocactus (Cactaceae) based on molecular, morphological, and cytogenetical data. – Taxon 68(4): 714-730. https://doi.org/10.1002/tax.12092