Tephrocactus articulatus var. strobiliformis
- 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