North-Central United States, Central United States, Western United States, Texas
Northeastern United States, Mid-Atlantic United States, Southeastern United States, South-Central United States, Texas, Mexico
Blue Toadflax, Old-Field Toadflax
Turtlehead, Leadwort, Aster
1a, 1b, 2a, 2b, 3a, 3b, 10
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24