United States, Texas, Cameron, Ringgold Park, near the Jacal, Brownsville.
Habit: erect herb. Habitat: open ground and fields. Annual. Soil: clay. Flowers: are in clusters at summit. Color: greenish. Odor: none. Month: March. Leaves: are opposite smooth, pale green. Fruit: a three lobed dry pod. Bark: green. Roots: fibrous. Frequent. It branches near the base.