Wildflowers of Twin Swamps Nature Preserve, Posey County, Indiana
American Beauties Native Plants
Bowman's Hill Wildflower Preserve
Celebrating Wildflowers, USDA Forest Service
Connecticut Botanical Society
Indiana Native Plant Society (INPS)
Indiana Species Pages - by Kay Yatskievych. 27 PDF's available now - additional ones will be available after completion of her updated Catalogue of the Vascular Flora of Indiana. "Flower Finder" by Kay Yatskievych - Images of 56 of the approx. 300 species that come into bloom in Indiana in Feb through April. Go to www.mobot.org/MOBOT/Research/curators/kay.shtml and click on Flower Finder.
Kansas wildflowers and grasses with more than 4,000 images of 700 species. Many of these plants are also found in Indiana.
Lady Bird Johnson Wildflower Center, Austin, Texas
The Natural Heritage of Indiana - Wildflowers