Pachycaul tree to 15 m; branching sparse and somewhat fastigiate. Leafy twigs c. 1 cm diam., with white latex. Leaves to 2 m long, at least 7-jugate, pseudogemmulate; petiole c. 10–25 cm, flattened adaxially, glabrous to pubescent, as is rachis. Leaflets to 38 by 10 cm, oblong to elliptic oblong, subcoriaceous, weakly asymmetric, bases cuneate; apices shortly acuminate, costae c. 10–14 on each side, rather oblique, prominent abaxially; petiolules to 15 mm. Inflorescence a raceme (female) or thyrse (male), to 75 cm, supra-axillary, pendent, puberulous; axis 4-angled, compressed in sicco; the proximal branches to 12 cm, few-flowered; pedicels 7–10 mm; flowers somewhat larger in females than males, sweetly-scented, laticiferous. Calyx c. 6 mm tall, 9 mm diam., campanulate to subcylindrical, extended into stout pseudopedicel c. 10 mm long, puberulous to rusty-tomentose without, with thickened wavy, median band, apex completely enclosing corolla in bud and splitting into c. 4 irregular triangular teeth c. 5 mm tall at anthesis. Petals in 2 ranks, 3 outer 14–24 by 7–8 mm, oblong-spathulate, fleshy, tomentellous without, glabrous within, apex rounded, (3–)4–7 outer 10–18 by 3–5 mm, narrowly oblong-spathulate, glabrous. Staminal tube 5–7 mm diam., glabrous without, sparsely pilose within, below anthers, margin obscurely crenulate to lobed, the lobes to 1 mm; anthers 10–13, c. 2.5 mm long, linear-oblong, locellate, glabrous, basifixed, included c. 1 mm within tube. Disk very shallow to obscure or absent. Ovary c. 9 mm long, 3 mm diam. (female), 7–9-locular; style terete, pubescent proximally; stylehead c. 1.5 mm diam., discoid, glabrous. Capsule c 8 cm diam., flattened-globose, densely but minutely tomentose, borne singly or in pairs; pericarp thick, leathery, exuding white latex on cutting. Seeds c. 2.5 cm long, shaped like orange-segments, 1 per locule; hilum large; sarcotesta vascular; cotyledons superposed.
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