14 October 1999.
Missouri, United States
Locality: South side of 290th Street, 1.1 miles east of Highway 111 and Forest City, Holt County.
Coordinates: 39.9886, -95.2200
(Map it)
Georeference protocol: Lat/Lon determined via Map location
Environment description: Roadside ditch along margin of corn field.
Number of plants sampled: 120
Comment: ~120 plants sampled from a population size of ~1000.
Collector(s):