United States, Illinois, Cook, Bunker Hill Prairie (at Sidney Yates Flatwoods) Forest Preserve, Edgebrook, Chicago; west side of Caldwell Avenue, 1 mile north of Devon Avenue; 60 yards along bike trail from parking area; growing along path leading down to river.
Open edge of woods; isolated plant; roundish shrub approximately 8 feet high; dense heads of white flowers; associates: Fraxinus species, Acer saccharum, Cornus racemosa, Ptelea trifoliata, Lonicera x bella, Rhamnus cathartica.