Liana (Laos) Perennial climbing shrub, reaching a length of 5-6m., with tuberous roots, fascicled.Leaves opposite or alternate, oblong heart-shaped; main nerves curved, secondarynerves very close. Flowers in the axir of leaves, greenish-yellow externally, reddish-purple within, fetid. Capsule ovoid-oblong, many-seeded (Vietnam)