One of the tiny first flowers to appear in spring. With one of the best names. An edible bitter herb native to Europe and Asia; in North America it’s considered an invasive weed. “Habitats with a history of disturbance are preferred.” (Well put, Illinoiswildflowers.com!) Mustard family.
Hairy Bittercress, Hoary Bittercress (Cardamine hirsuta)