1969.
Story County, Iowa, United States
Locality: Collected 1.0 mile west of McCallsburg on along railroad south side on knoll east of culvert and drainage ditch.
Coordinates: 42.1664, -93.4128
(Map it)
Elevation: 326m.
Habitat: Wild Habitat
Comment: Seed sampled from two plants having good branching, medium height, and good standability.