Southwestern United States, Mexico
Caribbean, Central America
Desert, Dry areas, Rocky areas, Sandy areas
ditches, Grassland, Moist Ditches, Moist Soils, Roadsides
9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23
H1, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24