Tree 15–35 m; bole to 50 cm diam. Bark dark brown to black; inner bark bright red-brown odorous; sapwood creamish; heartwood light brown. Leafy twigs 5–6 mm diam. Leaves to 30(–100) cm, 5–7-jugate with apical spike or scar and one lateral leaflet often appearing terminal; petiole (4–)8–12 cm, weakly angled to grooved adaxially, ± minutely adpressed pubescent. Leaflets 10–18(–25) by 5–9 cm, elliptic-oblong, opposite to alternate, subglabrous to finely adpressed pubescent abaxially, particularly on veins, shiny adaxially, bases asymmetric, obtuse to rounded, apices obtuse to weakly acuminate; ostae 14–20 on each side, the intercostals sometimes almost as conspicuous, obtuse, spreading, not looped together even at margin, sunken adaxially, prominent abaxially; petiolules 1–2 cm, sometimes weakly swollen at base. Thyrses to 20 cm, weakly supra-axillary; branches to 8 cm, subsquarrose bracteoles 3–5 mm, lanceolate to subfoliose, adpressed pubescent. Flowers subsessile, pinkish in bud. Calyx c. 2 mm deep, 3 mm diam., 4-or 5-lobed to 1/3, adpressed pubescent without. Petals 4, c. 9 mm long, narrowly spathulate, valvate, creamish, adpressed pubescent without, apices acute, thickened. Staminal tube glabrous, margin crenulate; anthers 8, c. 1 mm long, glabrous, inserted c. 1.5 mm within tube, free filament c. 0.5 mm. Disk c. 6 mm long, narrowly urceolate, densely sericeous without, margin crenate to 8-lobed with impressions of anthers, slightly widened. Ovary adpressed sericeous, 4-locular, each locule (?) 2-ovulate; style terete, subglabrous; stylehead spherical. Capsule subglobose, very shortly beaked, pubescent (unripe). Seeds oblong; seedcoat coriaceous; cotyledons collateral (Merrill & Perry, l.c.).
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