Shrub or small tree to 10 m high, 8 cm in diameter. Branchlets terete, brownish, scarcely puberulous or velutinous. Leaves: rachis up to 28 cm, velutinous, glands sessile, circular to oblong, flat to concave and with raised margins, 0.5-1.5 mm; pinnae 5 pairs or more, to 15 cm long, puberulous to velutinous; leaflets 10-22 pairs per pinna, sub-sessile, opposite, chartaceous, drying brown or brown-green, unequal-sided, ± trapezoid, 0.5-3.5 by 0.5-1.2 cm, base asymmetrically half truncate/ half cuneate, apex broadly acute or rounded, mucro-nulate or rarely emarginate, upper surface puberulous, lower densely puberulous or tomentose, main vein diagonal, lateral veins hardly visible. Inflorescence terminal, puberulous or velutinous, consisting of shortly pedunculate glomerules, aggregated into panicles to 50 cm long; glomerules composed of 1-3 (sub)sessile flowers; floral bracts oblong, acute, c. 1 mm, puberulous. Flowers pentamerous, bisexual. Calyx green, cup-shaped, c. 1 mm, glabrous or puberulous; teeth deltoid, inconspicuous, ± ciliate. Corolla greenish white to cream, campanulate, c. 2.5 mm, glabrous; lobes lanceolate, acute, c. 1.5 mm. Stamens creamy white or white, to 10 mm long, tube equalling the corolla-tube. Ovary solitary, subglabrous, with a few scattered hairs only. Pod orange outside, reddish orange within, contorted into a circle, spirally twisted after dehiscence, chartaceous, to 20 by 2 cm, slightly sinuate between the seeds, puberulous, veins inconspicuous, dehiscing first along the ventral suture. Seeds bluish-black, ovoid or globose, ± flattened, c. 8 mm in diameter