North America, Southwestern United States, Mexico
Mexico, Central America, South America
Echinocactus parryi, Echinocactus texensis
Cubanelle, Aconcagua, Biscayne, Key Largo, Qantanamo, Grenada, Key West
12, 13, 21, 22, 23, 24
A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24