United States, Illinois, Vermilion, Middle Fork Woods Nature Preserve at Kickapoo State Park, west of and adjacent to the MIddle Fork River. Danville NW 7.5 minute quadrangle.
T. 19N, R. 12W, SW1/4 NW1/4 NW1/4 NE1/4 Sect. 5
Mesic ravine with Quercus rubra, Tilia americana, and Acer saccharum . Common.