18 August 2005.
Wyoming, United States
Locality: Both sides of El Rancho Road, ~1.5 miles north of ramp, Exit 94, Interstate 25 (north of Wheatland), Platte County.
Coordinates: 42.2833, -105.0508
(Map it)
Elevation: 1484m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Roadside ditch, rocky, steep slopes, no trees.
Comment: Population size ~300; well past peak flowering. H. annuus present.
Collector(s):