Here's a sampling of a few of my favorites...
Aristolochia tomentosa 'Pipevine, Dutchman's Pipe' (Host plant of the pipevine swallowtail butterfly).
This is the fourth year for this wildflower in my butterfly garden and it's loaded with blooms (and caterpillars)!
Milkweed is the host plant for the Monarch, but it's a favorite nectar/food source for the swarms of Great Spangled Fritillaries that visit my garden...
For more info and photography of wildflowers, visit Clay and Limestone's celebration of wildflowers the 4th Wednesday of each month.