Herbaceous vine; latex white. Roots tuberous. Indumentum colourless. Leaves with petiole 2–7 mm long; lamina linear to lanceolate, to 5.5 cm long, to 1 cm wide, cuneate to rounded at base, acute, glabrous or with scattered trichomes below, not triveined at base; venation obscure below; colleters 3 or 4. Inflorescences umbelliform. Flowers 4–5 mm long, 3–4 mm diam.; pedicels 4.6–8 mm long. Corolla shallowly campanulate, yellow to yellow-green; tube 2.6–3 mm long, 3–3.2 mm diam.; lobes triangular, 1.6–2 mm long, 1.5–2 mm wide, internally glabrous. Corolline corona absent. Staminal corona of 5 auriculate, peltate lobes shorter than staminal column, entire; lobes 0.8–1 mm long, c. 0.8 mm wide. Anther appendages ovate to triangular. Style-head conical-globose. Pollinia oblong, c. 0.25 mm long. Follicles fusiform-ovoid, c. 10 cm long.
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