Research and Conservation in Southern Sonora, Mexico
Ferocactus pottsii (biznaga)
 Ferocactus pottsii in tropical deciduous forest in Choquincahui, Sonora. Photo: Mark Dimmitt |
 Ferocactus pottsii in oak woodland, Rancho Santa Bárbara northeast of Alamos, Sonora. Photo: Martín G. Figueroa |
 Ferocactus pottsii flowering in cultivation. Photo: T.R. Van Devender |