Lianas. Branches with tuberculate whitish lenticels. Leaves 7-11-foliolate, juvenile at anthesis; rachis 10-12 cm, including petiole 6-8 cm; leaflet blades oblong-elliptic to sometimes narrowly ovate, 4.5-5.5 × 1.5-2.5 cm, both surfaces glabrous, apex shortly acuminate. Pseudoracemes 12-16 cm including peduncle; rachis nodes with 2 or 3 fascicled flowers. Pedicel 2-3 mm. Flowers ca. 1.2 cm. Calyx campanulate, ca. 5 mm, densely rust-colored sericeous; teeth short. Corolla whitish or rose-red, ca. 7 mm. Stamens 7-8 mm. Ovary sericeous. Legume narrowly oblong, 7-16 × 2-2.3 cm, compressed, glabrous, apex mucronate; adaxial suture with a 2-4 mm wide wing. Seeds 2 or 3 per legume. Fl. Apr-May, fr. Jun-Aug.