Tree 3-10 m tall. Stems tomentulose, glabrescent with age. Leaves trifoliolate; petioles adaxially flattened, submarginate, appressed-pubescent, 3.1-7 cm long; leaflets membranaceous, glabrous except for the abaxially sparingly pubescent veins, or barbulate vein angles, elliptic, lanceolate or oblanceolate, 8-15 × 3.1-6.7 cm (lateral leaflets slightly smaller), the base obtuse to nearly cuneate on distal leaflets, obtuse-rounded on lateral ones, the apex long-acuminate to cuspidate, the margins obtusely serrate to entire. Thyrses unbranched, 7-15 cm long; cincinni sessile, 2-3-flowered. Calyx bilaterally symmetric, light green, glabrous or puberulent, the sepals 4, concave, rounded, ciliate, 1-1.2 mm long, outer sepals slightly smaller than the inner ones; petals white, spatulate, ca. 1.2 mm long, auriculate, sericeous on upper half; disc 4-lobed; filaments villosulous; ovary sericeous. Fruits developing a single monocarp, this green, glabrous, obovoid, 1.2-1.5 cm long.