Ceratozamia latifolia.
Part of:
Martínez-Domínguez L, Nicolalde-Morejón F, Vergara-Silva F, Stevenson DWm (2018) Taxonomic review of
Ceratozamia
(Zamiaceae) in the Sierra Madre Oriental, Mexico. PhytoKeys 100: 91-124.
https://doi.org/10.3897/phytokeys.100.23152