Tree to 30 m tall. Leaves entire; petiole slender, 1-3.5 cm long; lamina lanceolate to linear-lanceolate, 7-38 cm long, 2.5-8 cm wide, almost completely glabrous; base narrowly attenuate; margin usually smooth (often lobed on small trees); apex usually acuminate, sometimes obtuse; veins 15-40 pairs. Conflorescence ±erect, 15-24 cm long; common bracts c. 3-4 mm long, 4-5 mm wide, absent at anthesis. Tepals 2.5-3 cm long. Anthers 2-3.1 mm long; mucro c. 0.2-0.6 mm long. Ovary 1.2-2.4 mm long, ferruginous-sericeous; style 2-3 cm long; pollen presenter 2-3 mm long. Fruit 4.5-7 cm long, 2-3 cm wide, 1-1.5 cm thick. Seeds 4-6.5 cm long, 2-3 cm wide; wing c. 3-10 mm wide; embryo 1.7-3.5 cm long, 1-2 cm wide.
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