25 September 2009.
Illinois, United States
Locality: Along Messmer Road, NE 1/4 of SW 1/4 of Section 30, T24N, R4E, Pleasant Valley Quad, Carroll County.
Coordinates: 42.1289, -90.0844
(Map it)
Elevation: 204m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Roadside. 45% slope; north and east facing. Associated with Fraxinus americana, Lonicera reticulata, and Physocarpus opulifolius.
Number of plants sampled: 30
Collector(s):