25 September 1996.
Illinois, United States
Locality: Along Highway 164 at junction with road south to Cameron, Section 9, Coldbrook Township, T11N, R1W, Cameron Quad, Warren County.
Coordinates: 40.9500, -90.5167
(Map it)
Elevation: 235m.
Environment description: Soybean fields.
Number of plants sampled: 50
Comment: Pop 19. Collected from field of mostly Chenopodiums. 2 indehiscent individuals pressed.
Collector(s):