15 September 2016.
South Dakota, United States
Locality: along Hwy 83, north of Sand Lake and 6.2 miles south of Mound City, Campbell county
Coordinates: 45.6350, -100.0688
(Map it)
Elevation: 535m.
Environment description: Disturbed grassland at roadside, and margins of alfalfa field, with deep, sandy soil
Comment: Commomly associated with roadsides and agricultural fields in this area.
Collector(s):