Hedgehog Cacti of the Mountains and Deserts of the American Southwest

The Genus Echinocereus

Engelmann's Hedgehog Cactus: Echinocereus engelmannii

Mojave Kingcup Cactus: Echinocereus mojavensis (Synonyms: Echinocereus triglochidiatus, Echinocereus triglochidiatus var. mojavensis)