Distribution of Ceratozamia species. A C. osbornei B C. robusta C C. sabatoi D C. sancheziae.
Part of:
Martínez-Domínguez L, Nicolalde-Morejón F, Vergara-Silva F, Stevenson DW (2022) Monograph of
Ceratozamia
(Zamiaceae, Cycadales): an endangered genus. PhytoKeys 208: 1-102.
https://doi.org/10.3897/phytokeys.208.80382