Latin America and the Caribbean, Central America, Micronesia
United States, California
Hannah Yams, Japanese Sweet Potatoes
Santa Clara red ribbons, red ribbons, Raiche's red ribbons
Cold Regions, Tropical regions
Dry areas, foothill woods
21,22
A3, 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