07 July 1986.
Texas, United States
Locality: Along and in Hondo Creek bottom, 1 mile south of Tarpley, Uvalde area, Medina County.
Coordinates: 29.7500, -99.5000
(Map it)
Elevation: 366m.
Environment description: Creek bottom. 1% slope with full exposure. Hilly, rocky, and wet. Tarrant rock outcrop soil. Average annual precipitation of 30 inches. Associated with Johnson grass.
Collector(s):