National Geographic : 1924 Jun
i + Photograph by Loyd Cooper DESERT FLORA IN CALIFORNIA Nowhere do plants more clearly illustrate their adaptation to environment than in the desert. With their fight for existence sobitter, they must go the limit in protecting themselves against animals. Distasteful secretions are unusually abundant in desert plants and spines and prickles the rule. Some, like the living-rock cactus, even employ the art of camouflage to protect them from the animal allies ofdrought.