Robust, heterophyllous, root-climbing liane to 7 m. Shoot system only weakly differentiated into flowering and non-flowering branches; eocaul not seen; seedling shingle-leaved, abruptly producing adult leaves. LEAVES deep green adaxially, paler abaxially, stiffly chartaceous, drying greyish to brownish green; petiole 6–18.5 × 0.3–0.5 cm, stout, sheath prominent, extending to base of geniculum, margins later scarious, clasping basally; blade 11–28 × 4–10 cm, ovate to elliptic or lanceolate, base acute to obtuse, apex attenuate-mucronate, acute or attenuate, minutely apiculate, often falcate; primary lateral veins arising at 70–80°, intramarginal veins 2 per side, the outer intramarginal vein remaining very close and parallel to margin. INFLORESCENCE solitary, occasionally paired, usually subtended by cataphylls on condensed short shoots arising from below the axils of distal leaves, occasionally from such shoots arising (persisting?) on leafless older stems, rarely terminal on leafy shoots, held inverted beneath the shoot by reflexing of the peduncle; peduncle (3.5–)12–16 × 0.3–0.35 cm, very stout, reflexed 90–180° at the base, green to dark purple-green. Spathe (3–)6–9 × (0.3–)0.4–1.5 cm, lorate, strongly reflexed and appressed to peduncle, base minutely cochleate on the peduncle, apex acute, apiculate, green to dull purple-green, stiffly leathery. Spadix sessile, (2.5–)6–7 × 0.3–0.5 cm, cylindrical to tapering-cylindrical, deep purple-brown. Flowers c. 1.3 mm diam., with 6 free tepals and 6 stamens. INFRUCTESCENCE with numerous berries; fruits 10–15 × 4–7 mm, conical-ellipsoid, ripening red; seeds not observed.