22 September 2007.
Texas, United States
Locality: West side of Highway 17, 15.9 miles south of junction with Interstate 20 business loop, Pecos.
Coordinates: 31.1892, -103.5781
(Map it)
Elevation: 827m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Weedy area between highway and railroad. Sandy soil.
Number of plants sampled: 200
Comment: Population size ~2000.
Collector(s):