02 October 2007.
Texas, United States
Locality: East side of Highway 214 (scattered plants on west side of highway also), 0.1 mile north of city limits sign on north side of Enochs.
Coordinates: 33.8769, -102.7603
(Map it)
Elevation: 1155m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Irrigated cultivated sunflower field on west side of highway. Sandy loam soil.
Number of plants sampled: 200
Comment: Population size >500.
Collector(s):