I've been busy tracking down flowers in bloom this week and managed to catch shadows of the following:
Downy sunflower (Helianthus mollis) - threatened
Hairy wild petunia (Ruellia humilis) - threatened
Houton's goldenrod (Solidago houghonii) - threatened
Lakeside daisy (Hymenoxys herbacea) - endangered
Upland boneset (Eupatorium sessilifolium) - threatened
Thank you again to Laura Mueller at the University of Michigan Matthaei Botanical Gardens and to Mr. S in Laingsburg!