A herbaceous climber. It is an evergreen vine. It has a grey covering. The leaves are narrowly oval and 5-15 cm long by 2-11 cm wide. They taper to a sharp tip. The leaf stalk is 1-2 cm long. The flowers are light purple-red. There are 15-20 flowers in a group 6-12 cm long. The fruit are follicles 11 cm long and 1 cm wide. The seeds are round with yellowish-brown hairs.