A hillside of organ pipe cacti and a lone saguaro in the Puerto Blanco Mts, Organ Pipe Cactus National Monument, Arizona. Organ pipe cactus is a tropical species that extends into the Sonoran Desert. It is more abundant in thornscrub and tropical deciduous forest. See the gallery on coastal thornscrub for an impenetrable organ pipe forest.

Retrieved from the Arizona-Sonora Desert Museum web site on 07-15-2024