An annual herb; stems slender, 15-20 cm long. Leaves pinnate, 2-3 cm long; leaflets membranaceous, oblanceolate, 5-12 mm long, rounded at the apex, the margins and midribs covered with bristles. Flowers yellow 12 to many clustered in axillary racemes; peduncle 1-1.5 cm longdeeply divided into 2- ribs. Pods 6-8 jointed, each joint slightly orbicular, 1-1.5 mm long, covered with papillae.