Pachycaul treelet or small tree to 15 m with open crown. Bark smooth greyish green, inner bark pale brown; wood pale fawn. Twigs rather rough, brown, with vertical lenticels. Leafy twigs c. 8 mm diam. Leaves to 150 cm, at least 7-jugate, pseudogemmulate, dull adaxially, pale abaxially, in terminal spirals; rachis green, subglabrous to weakly pilose; petiole to 20 cm or more, subglabrous to weakly pilose. Leaflets 10–28 by 3.5–10 cm, oblong or oblong-lanceolate, glabrous or subglabrous when sparsely pubescent on veins, bases acute or weakly obtuse, apices acuminate, costae c. 15 on each side, prominent and drying pale abaxially; petiolules to 15 mm, sometimes pubescent. Thyrses to 35 cm, axillary to supra-axillary, narrow, sparsely branched; most proximal branches to 14 cm, ascendant weakly pilose to subglabrous, each with 1–4 flowers; pedicels c. 2–3 mm, stout. Calyx 5–6 mm long, 7–8 mm diam., shallowly cupular, densely tomentose without; margin truncate to obscurely undulate. Petals (5) 6 in two ranks, white, adhering to tube at base, 3 outer 16–20 by 6 mm, narrowly oblong, obtuse, (2) 3 inner 14–18 mm long, almost linear, obtuse, apices hooded. Staminal tube thick, tough, glabrous to subglabrous without, laxly pilose proximally within, margin truncate to obscurely dentate; anthers 8–10 (11), 2–2.5 mm long, linear, basifixed, included. Ovary 6–8-locular, densely villous; style villous in proximal half; stylehead discoid to stoutly cylindrical. Capsule to 7 cm long, 8 cm diam., flattened globose, 6–8-locular, borne singly or paired on rachis to 20 cm long, 8 mm diam.; pericarp c. 4 mm thick, tough, greenish-brown velutinous, exuding white latex on damage. Seed to 5 cm, like an orange-segment; sarcotesta vascularized.
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