Shrub or tree to 4 m high; bark dark, ±smooth. Branchlets densely appressed-pubescent; hairs predominantly white, some ferruginous, quickly glabrescent. Leaves flat, linear to narrowly obovate, 6-12 cm long, 1-4 mm wide, initially densely appressed ferruginous-pubescent, quickly glabrescent; apex abruptly short-acuminate and uncinate. Peduncle simple or branched, 2-9 mm long, densely white-pubescent; rachis 1-1.5 mm long, white-pubescent. Flowers 10-16, white; pedicels 4-6 mm long, densely white appressed-pubescent. Perianth 1.6-4 mm long, white-pubescent, recurved to claw. Pistil 7-13 mm long; style recurved, rarely looped; pollen presenter oblique. Fruit obliquely obovate or elliptic, 3-4.5 cm long, 2-2.6 cm wide, abruptly attenuate into erect or recurved apiculum; beak black. Seed 17-29 mm long, 9.5-16 mm wide, not occupying whole of valve; wing entirely down one side of seed body, partly or fully down other.
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