[Wildflowers of the Southwestern Deserts of the United States]

The Cactus Family in the Southwestern Deserts of the United States

Beavertail Prickly Pear, Beavertail Cactus, Beavertail: Opuntia basilaris

Beavertail Prickly Pear, Beavertail Cactus, Beavertail: Opuntia basilaris

Saguaro, Giant Cactus: Carnegiea gigantea (Synonyms: Carnegia gigantea, Cereus giganteus)

Cholla: The Genus Cylindropuntia

Hedgehog Cacti: The Genus Echinocereus

Barrel Cacti: The Genus Ferocactus

Fishhook Cacti: The Genus Mammillaria

Prickly Pear: The Genus Opuntia

Paul Slichter Mail