Slender, heterophyllous, root-climbing liane to 7 m. Shoot system only weakly differentiated into flowering and non-flowering branches; eocaul thread-like, with scattered minute bracts, then abruptly becoming shingling; seedling shingle-leaved, then abruptly producing adult leaves. LEAVES mid- to deep green adaxially, slightly paler abaxially, stiffly chartaceous, drying greyish green with the midrib pale yellow and prominently raised abaxially; petiole 3–8 × 0.3–0.35 cm, slender, sheath extending to base of geniculum, clasping basally, prominent; blade 6–19 × 1.5–7 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 almost 90°, intramarginal veins 2 per side, the outer intramarginal vein remaining very close and parallel to margin. INFLORESCENCE solitary, 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 2–4 × 0.2–0.3 cm, very stout, reflexed 90–180° at the base, green to dark purple-green. Spathe 2.5–4 × 0.25–0.3 cm, lorate to lorate-lanceolate, strongly reflexed and appressed to peduncle, base minutely cochleate on the peduncle, apex acute, apiculate, green to dull purple-green, stiffly leathery. Spadix sessile, 2–7 × 0.3–0.4 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 7–15 × 4–8 mm, ellipsoid, ripening red; seeds not observed.