Tree to 25 m high. Shoots glabrescent. Leaves: petiole 1.2–2.5 cm long; lamina elliptic, oblong or narrowly ovate, usually 8–20 cm long, 3–10 cm wide, decurrent or attenuate at base, acuminate, glabrous, usually with 7–15 pairs of secondary veins. Peduncle 2–3.5 cm long, pubescent. Lower bracts oblong, 2–2.5 mm long; upper bracts broadly elliptic, concave, 9–10 mm long, appressed-pubescent. Lower tepals elliptic, concave, 12–10 mm long, 7–8 mm wide, appressed-pubescent outside; intermediate tepals elliptic to obovate, 8–10 mm long, 3–5 mm wide, appressed-pubescent outside; upper tepals oblong to narrowly obovate, 7–8 mm long, 2.5–3 mm wide, acute to acuminate, appressed-pubescent only in middle near base on outside. Stamens 13–15, 2.7–3 mm long. Staminodes 8–10. Ovary obovate, compressed, 1.5–2 mm long. Fruit 5–6 cm long, 6–7 cm wide, olive brown.
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