For Coryphantha
Breslin, P.B., M.F. Wojciechowski, and L.C. Majure. 2020. Molecular phylogeny of the Mammiloid clade (Cactaceae) resolves the monophyly of Mammillaria. Taxon 70(2): 308-323.
Chincoya, D.A., S. Arias, F. Vaca-Paniagua, P. Dávila, and S. Solórzano. 2023. Phylogenomics and biogeography of the Mammilloid Clade revealed an intricate evolutionary history arose in the Mexican Plateau. Biology 12: 512.
Sánchez, D., B. Vázquez-Benítez, M. Vázquez-Sánchez, D. Aquino, and A. Arias. 2022. Phylogenetic relationships in Coryphantha and implications on Pelecyphora and Escobaria (Cacteae, Cactpodeae, Cactaceae). PhytoKeys 188: 115-165.
Zimmerman, A.D., and B.D. Parfitt. 2003b. Coryphantha. In Flora of North America Editorial Committee. 2003b. Flora of North America north of Mexico. Volume 4, Magnoliophyta: Caryophyllidae, part 1. Oxford Univ. Press, New York, NY. 559 pp.
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