10 October 2008.
Illinois, United States
Locality: Along Illinois Highway 37, near Olmsted, NE 1/4 of NW 1/4 of Section 27, T15S, R1E, Olmsted Quad, Pulaski County.
Coordinates: 37.1797, -89.0947
(Map it)
Elevation: 102m.
Georeference protocol: Lat/lon determined by GPS
Number of plants sampled: 10
Associated species: Acer negundo, Robinia pseudoacacia, Salix, Toxicodendron radicans, and Ulmus rubra.
Comment: Majority of specimens had poor quality seeds due to presence of weevils.
Collector(s):