Decumbent to erect climbing annual, stem appressed pilose to glabrous. Leaf paripinnately compound, leaflets 6-12, 3-22 mm long, 1-3.5 mm broad, narrowly linear to oblanceolate-oblong, obtuse to acute; stipules semisagittate or hastate, tendril mostly simple. Inflorescence a 1-3-flowered axillary, pedunculate raceme. Calyx c. 3 mm long, pilose, lip oblique, teeth unequal, hardly shorter than the tube. Corolla lilac or pale-blue. Vexillum 4-7 mm long. Fruit 8-15 mm long, 2.5-4.5 mm broad, linear-oblong, glabrous, 3-4-seeded.