Previamente P. palmeri
según la lista de plantas de Biosfera de Chamela(ahora basionym de P. occidentalis palmeri).

https://www.researchgate.net/profile/Tatyana_Kravtsova/publication/260050950_Morphology_and_Anatomy_of_Fruits_in_Pouzolzia_Urticaceae_in_Relation_to_Taxonomy/links/570cff7808ae2b772e42a86c/Morphology-and-Anatomy-of-Fruits-in-Pouzolzia-Urticaceae-in-Relation-to-Taxonomy.pdf

http://sweetgum.nybg.org/images3/667/646/00284448.jpg

Trees and Shrubs of Mexico: Fagaceae-Fabaceae
By Paul Carpenter Standley, United States National Museum p. 220.