United States, Texas, Edwards, Hwy 55, 9.0 mi. SSE of jct. of Hwys 377 and 55 in town of Rocksprings.
29.903713 -100.137696 +-8000m.
SE Edwards Plateau, area of rolling hills, oak woodlands with scattered juniper, largely cleared for grazing. Abundant along top and bottom of road bank. Full flower.