23 September 1996.
Iowa, United States
Locality: Just off Highway 163 near mile marker 23, Fair View Township (T-78 N, R-20 W), Prairie City Quad, Jasper County.
Coordinates: 41.5333, -93.1333
(Map it)
Environment description: Soybean field margin and roadside.
Number of plants sampled: 100
Comment: Pop 15.
Collector(s):