18 August 2005.
Wyoming, United States
Locality: Both sides of Hat Six Road (Highway 253), 7.8 miles southeast of Exit 182, Interstate 25 (east of Casper), Natrona County.
Coordinates: 42.7656, -106.1461
(Map it)
Elevation: 1630m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Steep rocky road cut and adjacent meadows.
Comment: Population size ~200; well past peak flowering. One H. nuttallii.
Collector(s):