Woody vine; latex white. Roots fibrous. Indumentum colourless. Leaves with petiole 50–100 mm long; lamina elliptic-ovate, to 19 cm long, to 15 cm wide, cordate to lobate at base, acuminate at apex, with dense trichomes below, not triveined at base; venation prominent below; colleters 5–22. Inflorescences of 1–many umbelliform fascicles. Flowers 5–7 mm long, 6–7 mm diam.; pedicels 4–10 mm long. Corolla campanulate, orange, maroon, brown or green; tube 3.5–5 mm long, 3.5–4 mm diam.; lobes elliptic-ovate, 2.6–4 mm long, 1.5–2.5 mm wide, internally glabrous or with sparse, basal trichomes. Corolline corona absent. Staminal corona of 5 linear lobes shorter than staminal column, entire, adnate for most of length; lobes 2–3 mm long, 0.5–1 mm wide. Anther appendages lanceolate to ovate. Style-head conical-globose. Pollinia obloid-ovoid, 0.15–0.25 mm long. Follicles fusiform-oblong, 4–7 cm long.
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