Research and Conservation in Southern Sonora, Mexico
Mammillaria yaquensis (cabeza de viejo, biznaguita)
Synonyms: Mammillaria thornberi yaquensis
 Mammillaria yaquensis near Guaymas, Sonora. Photo: Mark Dimmitt |
 Mammillaria yaquensis near Guaymas, Sonora. Photo: Mark Dimmitt |