24 September 1987.
Illinois, United States
Locality: Along county road to St. Francisville, 0.7 miles east of Route 1, SW 1/4 of NW 1/4 of Section 19, T2N, R11W, St. Francisville Quad, Lawrence County.
Coordinates: 38.5833, -87.6833
(Map it)
Elevation: 125m.
Environment description: Growing in overgrown, weedy ditch along road in association with Celtis occidentalis, Fraxinus pennsylvanica, Toxicodendron radicans, and Oenothera biennis.
Comment: 1987 Cuphea Trip.