United States, Illinois, Iroquois, Middleport Lafayette Post Road Historic Site, 1.9 mile southeast of Watseka, just east of Sugar Creek. (WGS84/NAD83).
40.75351 -87.71614
T. 26N, R. 12W, NE 1/4 Sect. 9
Low, moist, shaded woods on margin of sand pond. Associates: Gleditsia triacanthos, Glyceria striata, Parthenocissus quinquefolia, Quercus bicolor, Rosa multiflora, Rubus allegheniensis, Viburnum opulus.