Collected
07 July 1990.
Texas, United States
Locality: Val Verde Co., U.S. Hwy 90, 0.8 mi. E of jct. Hwy 277, E of Del Rio.
Environment description: Disturbed area adjacent to shoulder S of Hwy with Acacia rigidula and Guaiacum angustifolium.
Number of plants sampled: 3