An evergreen vine. It grows to 1.5 m high, and spreads to 1 m across. The stem is slender and climbing. It loses its leaves during the year. The stems arise from a thickened tuberous rootstocks. The leaves are oval and they taper to a point. They are 6-10 cm long. The flowers are white and like tubes. They have brown expanded lobes united at the tip. The fruit are pointed linear follicles. The fruit are 10 cm long.