29 November 1978.
Texas, United States
Locality: Zone 16, Section 67, Collingsworth County.
Coordinates: 35.1167, -100.2667
(Map it)
Elevation: 701m.
Environment description: Seeded field. 2% slope. Miles fine sandy loam soil. Associated with Bluestem, Indiangrass, and Sideoats gramma.
Collector(s):