United States, Texas, Hidalgo, Barreda Station and at Weslaco.
In the edge of thickets and in waste grounds. Erect, sparingly branched, canescent annual, 30 cm high. Alluvial soil. Flowers terminal, yellow. Leaves alternate, bipinnatifid, finely dissected. Fruit a linear pod, flat, slightly curved with 2 rows of seed. Scattered in open grounds throughout the Valley.