Good call, Scott! It is Phlox divaricata, Woodland Phlox, a common native plant in Midwestern forests.
Posted earlier: This plant shows up occasionally in mesic forests in winter. Barbara Plampin, Myrna Newgent and I used to see it as we explored the forests of northern
"Is not January the hardest month to get through? When you have weathered that, you get into the gulf stream of winter, nearer the shores of spring." Henry David Thoreau Journal, February 2, 1854.