cylindropuntia spinosior 
Devil Cholla 
Devilshead 
Dutchman's pipe cactus 
Easter Cactus 
Eastern Prickly Pear 
Eastern Prickly Pear 
Echinocactus platyacanthus 
Echinocereus pentalophus 
Echinopsis candicans 
Echinopsis hertrichiana 
Echinopsis huascha 
Emory's Barrel Cactus 
Engelmann's Pricklypear 
Erect Prickly Pear 
Espostoa huanucoensis 
Espostoa melanostele 
Espostoa utcubambensis 
Ferocactus pilosus 
Fish bone cactus 
Fishhook barrel cactus 
Galápagos prickly pear 
Glaucous Barrel Cactus 
Golden Barrell Cactus