25 September 2007.
New Mexico, United States
Locality: Northeast roadside ditch, South Broadway Street at entrance to Interstate 25 (Exit 75), Williamsburg.
Coordinates: 33.1150, -107.2961
(Map it)
Elevation: 1290m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Weedy roadside drainage ditch. Sandy loam soil.
Number of plants sampled: 250
Comment: Population size >500, mixed flowering.
Collector(s):