Many thanks to Casey Galvin for showing me these little guys. Snow trillium are the first trillium to bloom in Missouri and one of the first blooming wildflowers in the state. Potentially being found in bloom with snow on the ground, snow trillium begins blooming in mid-March. Photographed at Battle of Athens State Historic Site on 20, March, 2021.
A Thousand Acres of Silphiums 
Interesting photos of the snow trilliums.