Castro-Castro, Arturo, Juan Pablo Ortiz-Brunel, Heriberto Ávila-González, Isaac H. Lichter-Marck, Pablo Carrillo-Reyes, Irma Lorena López-Enríquez, and Marco Antonio Barvosa-Jiménez. 2023. “Spatial Richness Analysis and an Evaluation of Extinction Risk for the Genus Pachyphytum (Crassulaceae), With the Description of a New Species from Sierra Madre Occidental, Mexico”. Phytotaxa 629 (3). Auckland, New Zealand:197-209. https://doi.org/10.11646/phytotaxa.629.3.2.