United States, Texas, Grayson, Ca. 4 mi. N of Denison, TX - Red River - Hwy 75; Sandy weedy areas of road construction along Hwy 75, 0.5 mi. S of bridge over the R.R., ca. 4 mi. N of the center of D.
Sandy, weedy areas. Herbs to 1 m tall. Rays and disc bright yellow.