United States, Illinois, Winnebago, Rock Cut State Park, Red Oak picnic area alongside Pierce Lake, 3.9 miles east of North Park. Coordinate Datum: WGS84/NAD83.
42.34656 -88.97587
T. 45N, R. 2E, Sect. 26
259 meters
850
Disturbed glacial terrain above lake. Mesic upland oak woodland slope at margin of cleared area. Specimen from cut tree approximately 50 feet tall, in flower.