16 October 2020.
Cerro Gordo County, Iowa, United States
Locality: Union Hills Waterfowl Production Area located approximately 6.24 miles northwest of Thornton, Cerro Gordo County
Coordinates: 43.0259, -93.4236
(Map it)
Elevation: 380m.
Georeference protocol: Lat/lon determined by GPS
Habitat: Wild Habitat
Environment description: Remnant pothole prairie.
Number of plants sampled: 60
Associated species: Bromus sp., Lobelia siphilitica, and Helenium autumnale
Slope: 0
Comment: V. hastata frequently occurs at this site along dry edges of potholes. Approximately 1000 specimens noted within three acres.
Collector(s):