Scientific Name - Medicago arabica (L.) Huds.
Family - Leguminosae
Annual with smooth prostrate stems. Leaves alternate, each composed of three leaflets. Leaflets wedge-shaped, as long as broad, and toothed from mid-blade to tip. Leaflets with conspicuous reddish-purple spot in center. Stipules broad and coarsely toothed. Small, bright yellow flowers ( two to five) borne in a cluster. Seed pods spirally twisted and covered with spines. Reproduces by seed. Found in the states of the Northwest, Southeast, Midwest, Pacific Northwest, and in California. Also found in Canada, Central and South America, Europe, and Asia.