Ariocarpus: Texas
Astrophytum: Texas
Bergerocactus: California
Carnegiea: California, Arizona
Cereus: Indie occid., Hawai
Coryphantha: Arizona, New Mexico, Texas
Echinocactus: California, Nevada, Utah, Arizona, New Mexico, Texas, Oklahoma
Echinocereus: California, Nevada, Utah, Arizona, New Mexico, Texas, Oklahoma, Colorado, Kansas, Wyoming, Sud Dakota, Nebraska
Epithelantha: Arizona, New Mexico, Texas
Escobaria: tutti gli stati occidentali e centrali, e quelli canadesi di Alberta, Saskatchewan, Manitoba
Ferocactus: California, Nevada, Utah, Arizona, New Mexico, Texas
Harrisia: Florida
Hylocereus: Florida
Leptocereus: Indie occidentali
Lophophora: Texas
Mammillaria: California, Nevada, Utah, Colorado, Arizona, New Mexico, Texas, Oklahoma
Melocactus: Indie occidentali
Neolloydia: Texas
Opuntia: tutti gli stati USA e quelli canadesi di B.Columbia, Alberta, Saskatchewan, Manitoba, Ontario
Pachycereus: Washington, Oregon, Montana, Idaho, Wyoming, S. Dakota, Nevada, Colorado, Kansas, Arizona, New Mexico
Peniocereus: Arizona, New Mexico, Texas
Pereskia: Florida
Pilosocereus: Florida
Rhipsalis: Florida
Sclerocactus: California, Nevada, Utah, Colorado, Arizona, New Mexico, Texas
Selenicereus: Florida, Texas
Stenocereus: Arizona
Thelocactus: Texas