Tree 12–18 m. high.. Branchlets puberulous at first.. Leaves: petiole 1.2–7 cm. long; pinnae 6–12 cm. long; leaflets 4–6 pairs, 2–8 cm. long, 1.3–6 cm. wide, elliptic to obovate or ovate, obtuse, obtusely subacuminate or sometimes rounded at apex, rounded to obtuse or subobtuse at base, glabrescent above, puberulous especially on midrib and lateral nerves beneath.. Flowers yellow, in heads on 2–4 cm. long peduncles.. Pedicels distinct even in bud, 2–4 mm. long, densely puberulous.. Calyx densely puberulous all over, 2 mm. long.. Corolla 3.5–4 mm. long; petals lanceolate, silky-pubescent outside.. Pods unknown.