Vines; bark purplish brown, lenticels shallow, obscure. Petiole 8-10 mm; leaf blade oblong or oblong-ovate, 10-18 × 5-8 cm, papery or ± leathery, lateral veins 9-11 on each side,conspicuous, angled at 70-90° to midvein, base rounded or broadly cuneate, apex shortly acuminate. Male inflorescences
simple or once branched; male spikes ca. 2.7 cm × 3.5 mm, involucral collars 9-11, each collar with 75-80 flowers plus 9-11 sterile female flowers, basal hairs forming a dense, browncushion. Female inflorescences borne on old branches, axillary, simple or once branched; female spikes with 10-15 involucral collars, each collar 5-6 mm apart in fruit, nodes each with10-13 female flowers. Seeds cylindric to cylindric-ellipsoid, 2.4-2.8 × 1.5-1.6 cm, very fleshy, base often contracted into an apparent stipe as long as wide when dried, apex subacute,outer coat coarsely reticulate-wrinkled when dried. Pollination May-Jul, seed maturity Aug-Oct.