12 October 1999.
Iowa, United States
Locality: West side of Cass Road, 0.3 mile north of intersection with 330th Street (County Highway K45), 2.4 miles west of Sloan, Woodbury County.
Coordinates: 42.2336, -96.2703
(Map it)
Georeference protocol: Lat/Lon determined via Map location
Environment description: Roadside ditch along edge of soybean field. Flat area.
Number of plants sampled: 60
Comment: ~60 plants sampled from a population size of ~125.
Collector(s):