Lianas, medium sized, to 4 m, root-climbing. Stems terete in cross section, to 6 mm in diam. Leaves when fresh mid-green; petiole oblong to oblong-triangular, 10-30(-50) × 5-10 mm, broadly winged, base decurrent to clawed, apex truncate to auriculate; each side with 2-4 secondary veins, veins prominent, especially in dried material; leaf blade lanceolate to narrowly elliptic, 7.5-13 × 1.25-2.5 cm, base rounded, apex long attenuate-mucronate to acute, minutely tubulate; each side with 2 or 3 intramarginal veins arising from base and immediately diverging and reaching leaf tip. Flowering shoot much abbreviated, arising from middle to distal leaf axils of fertile shoots, bearing a minute prophyll and few cataphylls 3-10 mm, sequentially longer. Inflorescence solitary; peduncle erect to spreading, curving to bring inflorescence upright, deep purple, very long and slender, 25-40 × 0.5-1 mm. Spathe greenish purple, ovate, deeply concave to almost flat, 4-6 × 3.5-7 mm, base prominently cordate, clasping and minutely decurrent on peduncle, margins straight, apex obtuse with a small but prominent mucro. Spadix stipitate; stipe erect, straight, deep purple, terete in cross section, 10-18 × 0.23-0.75 mm; fertile zone pale yellow, globose, 3.5-4 × 3.5-4.5 mm. Flowers 1-2 mm in diam. Infructescence with 1-7 berries. Fruit obclavate to ellipsoid, 10-15 × 7.5-10 mm. Fl. Aug.
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