Barrel Cacti of the Southwestern Deserts of the United States

The Genus Ferocactus

Barrel Cactus, California Barrel Cactus: Ferocactus cylindraceus (Synonyms: Echinocactus cylindraceus, Ferocactus acanthodes, Ferocactus cylindraceus var. lecontei, Ferocactus cylindraceus var. cylindraceus)