A slender climber, 1.5-2.5 with pendulous branches and foliage, Leaves 4-10 x 5-11.0 cm broadly ovate-cordate, obtuse at the apex, glabrous on both surfaces; petiole 3-5 cm long. Inflorescence solitary, axillary. Flowers on long pedicels, up to 7 cm long. Perianth limb inflated, pale yellowish green, swollen, contracted at the mouth, funnel-shaped at top, rich purple with creamy white markings. Stamens 6. Gynostegium short, cylindrical. Capsule c.4 cm long.