25 September 2009.
Illinois, United States
Locality: Along Rush Road, NW 1/4 of NW 1/4 of NE 1/4 of Section 36, T26N, R2E, Blackhawk (IL-IA) Quad, Jo Daviess County.
Coordinates: 42.2100, -90.2247
(Map it)
Elevation: 192m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Roadside. Associated with Clematis virginiana, Cornus amomum subsp. obliqua, C. drummondii, Juglans nigra, and Viburnum lentago.
Number of plants sampled: 50
Collector(s):