15 August 2005.
Wyoming, United States
Locality: Both sides of Iron Mountain Road (Road 10), ~13 miles southwest of Interstate 25 Exit 54 (Chugwater), Platte County.
Coordinates: 41.6586, -105.0294
(Map it)
Elevation: 1761m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Gravelly, disturbed roadside, flat.
Comment: Population size ~200; at peak flowering.
Collector(s):