22 September 2007.
Texas, United States
Locality: West side of FR 2037 (also scattered on east roadside), 0.1 mile south of Interstate 10, ~7 miles west of Fort Stockton.
Coordinates: 30.8953, -102.9869
(Map it)
Elevation: 911m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Irrigation ditch, into brushy pasture beyond fence. Sandy soil.
Number of plants sampled: 75
Comment: Population size ~300; just past peak flowering.
Collector(s):