13 October 1999.
Nebraska, United States
Locality: Just north of Brown's Ditch by the boat ramp, near oxbow lake in DeSoto National Wildlife Refuge, Washington County.
Coordinates: 41.5333, -95.9992
(Map it)
Georeference protocol: Lat/Lon determined via Map location
Environment description: Weedy area near oxbow lake.
Number of plants sampled: 100
Comment: ~100 plants sampled from a population size of 500+. Good population size.
Collector(s):