13 August 1986.
Texas, United States
Locality: Along Piney Creek bridge, between Groveton and Apple Springs, Trinity County.
Coordinates: 31.1417, -95.0917
(Map it)
Elevation: 79m.
Environment description: Wet to moist roadside ditch. 0.5% slope with a southern exposure. Marietta, fine sandy loam soil. Average annual precipitation of 45 inches. Associated with blackberry and Johnson grass.
Comment: Collected from >6 plants.
Collector(s):