Shrub or small tree up to 12 m high, d.b.h. 10-20 cm, with sparse foliage near the top only. Branchlets terete, glabrous. Stipules or stipular scars not seen. Leaves: rachis up to 57 cm, very stout, scarcely puberulous, glands slightly raised, circular, ± depressed in the central part, c. 1 mm in diameter; pinnae 2 or 3 pairs, 18.5-35 cm, scarcely puberulous, glands similar to rachis-glands; petiolules 3-7 mm, ± glabrous; leaflets 3-5 pairs per pinna, opposite, coriaceous, drying grey-green or dark green above, chestnut-brown beneath, ± equal-sided, elliptic, elliptic-oblong or oblong-lanceolate, 14-31.5 by 5-11 cm, base cuneate, sometimes tapering in the petiolule, apex tapering-acuminate, both surfaces glabrous, principal lateral veins 7 or 8 per leaflet-half, arching, reticulation dense and raised on both surfaces. Inflorescences cauliflorous, glabrous, consisting of once-branched racemes up to 15 cm long, branches up to 8 cm; floral bracts not seen; pedicels 2-8 mm, glabrous. Flowers trior pentamerous, bisexual. Calyx green, campanulate or subtubular, 7-16 mm, glabrous, irregularly lobed; lobes rounded up to 3 mm. Corolla white, funnel-shaped, 27-35 mm, glabrous; lobes oblong, acute, 9-15 mm. Stamens white, 45-55 mm; tube exceeding the corolla-tube, shorter than the corolla. Ovaries 2-5, glabrous, except for a few occasional hairs in the distal part at the base of the style. Pod green, probably sausage-shaped, c. 15 (-730) by 4-5 cm, hard-fleshy or coriaceous, or woody, very finely rusty pubescent outside, with thickened margins, mode of dehiscence not known. Seeds black, with a glaucous bloom, ellipsoid, 33-36 by 20-28 by 22-24 mm.