Critical evaluation of two published descriptions of the same species of Ceratozamia (Zamiaceae) from northern Oaxaca, Mexico, and the formal synonymization of C. martinezii under C. aurantiaca
. Phytotaxa. 575, 3 (Dec. 2022), 265–275. DOI:https://doi.org/10.11646/phytotaxa.575.3.4.