13 October 2008.
Illinois, United States
Locality: Along Opossum Creek on US Highway 51, SE 1/4 of SE 1/4 of Section 16, T10N, R1E, Oconee Quad, Shelby County.
Coordinates: 39.3053, -89.0839
(Map it)
Elevation: 200m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Associated with Daucus carota, Euphorbia corollata, Fraxinus americana, Helianthus strumosus, and Quercus alba.
Number of plants sampled: 50
Collector(s):