United States, Illinois, Monroe, Along Bluff Road about 1 mile south of Valmeyer and about 0.5 mile north of the junction of Bluff Road and Harris Road. Northern Section of the Lower Mississippi River Bottomlands Natural Division. Coordinate Datum: WGS84/NAD83.
38.27966 -90.30392
meters
415
Growing on talus limestone slope (about 15 to 20 feet up the slope) on west-facing (245°) slope with Acer saccharum, Diospyros virginiana, Fraxinus americana, Ulmus rubra, Cercis canadensis, Lonicera maackii, Campsis radicans, Celastrus scandens,