Tree 35 m by 60 cm. Branchlets 0.5-0.75 cm diam., densely fulvous-tomentose when young; pith dark-brown, hard, with peripherally arranged small vascular strands. Pith of branchlets dark-to light-brown, either with peripherally arranged, or with scattered vascular strands. Stipules none. Leaves 2-3-jugate, 25-40 cm long. Leaflets elliptic, 10-17 by 5-8 cm, stiff-chartaceous to coriaceous, densely tomentose beneath and on the midrib above, nervation prominent beneath; base slightly oblique, broadly cuneate to rounded; margin revolute, minutely fimbriate-serrate to entire; apex rather abruptly short-acute-acuminate; nerves 10-14 pairs (angle 65-75°), faintly curved, sometimes arching close to the margin. Inflorescences terminal, densely ferrugineously tomentose, ♂ paniculate, c. 18 cm long, flowers clustered, 9 racemose to spicate, 6-10 cm long, with c. 12-15 flowers. Bracts subulate. Flowers pubescent, male 13 mm, female 15 mm with a slightly concave receptacle. Calyx male 11 mm, female 15 mm. Petals unguiculate, apex inflexed-acuminate, incrassate. Stamens free, glabrous. Disk male cupular, 1 mm high, densely erect-pilose, female densely pubescent, adnate to the receptacle, free rim 1 mm. Pistil not stalked, densely woolly pubescent; male none. Infructescences and fruits unknown.