United States, Illinois, Cook, Black Partridge Woods Forest Preserve ( non-nature preserve), Lemont; on Bluff Road 0.5 mile west of Lemont Road, across Bluff Road from Black Partridge Woods entrance.
Degraded roadside; common; shrub with white blossoms; associates: Acer negundo, Convallaria majalis, Alliaria petiolata, Vitis riparia.