Small liana. Leaves papery, not shining, lanceolate-elliptic, tailed, up to 23 by 9 cm, changing from yellowish to black when dried; secondary nerves straight, broken before the margin, joining, very distant from each other, up to 3 cm; petiole rather long, ca 2 cm. ♂ Inflorescences often cauliflorous, branched once, its branches slender, 2-4 cm by 1 mm; catkins 3-5 cm by 3 mm. Collars cylindric-infundibuliform, 3 mm high. ♂ Flowers numerous, obconical, 2 mm high; stamen bilocular, cells white, splitting on their top. ♀ Inflorescences unbranched or once branched, slender, 8 cm long; collars 3 mm spaced. ♀ Flowers globose, apiculate, immersed in a dense hair cushion, 5-6 in each collar. Sterile ♀ flowers 4-6, ellipsoidal, short-acute, 172 mm long; involucre chartaceous; ovule obliquely ovoid, gradually acuminate, 1 mm high. Fruits elliptic, obtuse, not shining, yellowish-brown, 1½ cm long, 8 mm thick, whorls spaced ca 8 mm on the slender axis; outer envelop rather thin-fleshy, middle one leathery, inner one papery.
Shady lowland and hill rainforests at elevations up to about 1,000 metres. It has been reported from mixed dipterocarp and Agathis forests on hill sides, but mostly along rivers in primary and secondary forests. Swampy rain forests.
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Small climber of swampy rain forests at low altitudes.