Small slender myrmecophilous tree up to 5 m high. Branchlets and stipules unknown, but stipules apparently caducous. Leaves: rachis 20-30 cm, minutely puberulous, gland circular, depressed, without raised margins, c. 2 mm in diameter; pinnae 1 pair, 30-50 cm, appressed puberulous, circular, ± depressed, without raised margins, up to 1 mm in diameter; petiolules black, to 6 mm, puberulous; leaflets 40-60 pairs per pinna, opposite, the lower leaflet unpaired, unequal-sided, ovate-elliptic to oblong-lanceolate, 12-20 by 6-7 cm, base oblique, broadly cuneate or rounded, or half cuneate/half rounded, apex acuminate-caudate, lower surface minutely puberulous especially on the veins, upper surface glabrous or puberulous; principal lateral veins 8 per leaflet-half, arching, non-parallel. Inflorescence borne on the trunk, greenish yellow, pubescent by patent hairs, consisting of a simple or once-branched raceme, 1-2.5 cm; floral bracts deflexed, c. 2 mm, with nectary; pedicels 3-5 mm, puberulous or glabrous. Flowers male or bisexual. Calyx cup-shaped or campanulate, 3-5 mm, glabrous (in the type) or puberulous, margin crenate or shallowly dentate. Corolla funnel-shaped, (8-) 10-15 mm, glabrous, lobes triangular-ovate, acute, 4 mm. Stamens 25-37 mm, tube longer than the corolla-tube. Ovaries 3-5, glabrous. Pod (acc. to K. Schumann, l.с.) c. 30 by 5 cm, with thick margins, dehiscing along both sutures. Seeds shining black, obovoid, 4-5 by 2-2.5 cm.
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