14 October 1999.
Iowa, United States
Locality: East side of railroad tracks, west of 225th Avenue, 0.3 mile north of intersection with 275th Street, Fremont County.
Coordinates: 40.6633, -95.7547
(Map it)
Georeference protocol: Lat/Lon determined via Map location
Environment description: Along railroad tracks.
Number of plants sampled: 150
Comment: ~150 plants sampled from a population size of ~500.
Collector(s):