Research and Conservation in Southern Sonora, Mexico
Echinocereus stoloniferus stoloniferus (choyita, pitahayita)
Echinocereus stoloniferus tayopensis (choyita, pitahayita)
 Echinocereus stoloniferus tayopensis near San Bernardo, Sonora. All these stems are probably a single clone. Photo: Mark Dimmitt |
 Echinocereus stoloniferus tayopensis forms dense clusters and flowers profusely in cultivation. Photo: Mark Dimmitt |
 Echinocereus stoloniferus tayopensis flower with a cactus bee laden with pollen. Photo: Mark Dimmitt |