Tree 20 m by 25 cm. Branchlets 0.5-¾ cm thick, often lenticellate, glabrescent; pith with a peripheral cylinder of small vascular strands. Stipules subpersistent, inserted on the base of the petiole, suborbicular to elliptic, 0.75-2.5 by 0.75-2 cm, sub-coriaceous, densely sericeous-pubescent to glabrous, entire to denticulate, nerves anastomosing, conspicuous. Leaves 2-41-jugate. Leaflets broadly lanceolate to ovate or elliptic, 8-15-20 by (3.5-)5.5-10 cm, coriaceous, glabrous; base rounded to broadly cuneate; margin crenulate to the apex; apex rather abruptly broadly acute-acuminate; nerves (8-)11-12(-19) pairs (angle variable), straight to curved, gradually arching at some distance from the margin. Inflorescences: Inflorescences terminal, laxly thyrsoid, c. 4-6 cm long, few-flowered, minutely tomentose, glabrescent. Flowers (?) 1 cm long. Calyx 5 mm, minutely tomentose. Stamens 6, glabrous, inserted on the rim of the disk. Disk glabrous, adnate to the receptacle. Pistil glabrous. Infructescences terminal, laxly paniculate, 15-20 cm long, glabrescent, with c. 12 fruits; calyx widely funnel-shaped, 1.25 cm diam., with remnants of an annular, fimbriate disk and free stamens. Fruits narrowly spindle-shaped, triangular in cross-section, acute at base and apex, 6-6.5 by 2-3 cm, glabrous; pyrene rounded triangular, smooth except the 3 acute angle ribs near the apex; lids 3 mm thick. Seed 1; sterile cells more or less strongly reduced and more or less shifted to the surface.
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