01 October 1996.
Iowa, United States
Locality: North side of Highway 20 near mile marker 22 on Jewell Avenue, NE 1/4 of Section 36, Arlington Township, T89N, R44W, Correctionville Quad, Woodbury County.
Coordinates: 42.4917, -96.9917
(Map it)
Elevation: 396m.
Environment description: Soybean field.
Number of plants sampled: 50
Comment: Pop 25. All rudis, some individuals with aberrant dehiscence. One indehiscent Individual pressed. Population of approximately 200-300.
Collector(s):