Small trees, 7-10 m tall. Leaves sessile or with petioles 0.5-1 cm long; lamina obovate-lanceolate or linear lanceolate, rarely obovate-oblong, 13-52 by 3-9 cm, chartaceous, base long-cuneate, confluent to base of petiole, margin undulate or serrate-crenulate, apex acuminate or cuspidate, the acumen 5-14 mm long, lower surface glabrous; midrib prominulous above, prominent beneath, primary veins 15-28 pairs, brochidodromous, prominulous on both surfaces, intercostal veins prominulous on both surfaces. Cataphylls lanceolate or triangular, 5-25 by 3-5 mm, chartaceous. Inflorescences terminal or ramiflorous racemes or spikes, pendulous, 58-144 cm long, c. 60-flowered; rachis 2.5-3 mm diam., glabrous or pulverulent when young; bracts triangular, 2.5-5 by 1-2 mm, serrate. Calyx closed in bud, apex rounded, glabrous, rupturing into 2-3 unequal segments. Flowers sessile or with pedicels 5-12 mm long; hypanthium tetragonous, 4-winged or sharply angled, 2.5-5 by 1-3 mm, truncate, tapering to base, glabrous or pulverulent when young; sepals 2-3, unequal, 9-10 by 6-11 mm; petals elliptic, 15-20 by 7-10 mm, convex; staminal whorls 3, the inner one staminodal, staminal tube 1.5-3 mm, staminodia c. 0.75 mm; disc a small ring, c. 0.5 mm high; ovary (3-)4-locular, 3-5 ovules per locule; style c. 3.5 cm long. Fruits distinctly 4-winged, tetragonous, truncate, tapering at base, 4-6 by 1-2.5 by 1-2 cm. Seeds ovoid, distinctly fissured, 2.5-3.5 by 1-1.25 cm.
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