Pérez-Calix, E. and Torres-Colín, R. 2018.

Pachyphytum rogeliocardenasii (Crassulaceae), a new species from northwestern Querétaro, Mexico

. Phytotaxa. 348, 1 (Apr. 2018), 56–62. DOI:https://doi.org/10.11646/phytotaxa.348.1.7.