Perennial woody liana to 10m, grey-pubescent stem becoming glabrescent. Leaves to 300mm x 200mm, glabrous above, villous beneath. Cauliflorous cymes with a bracteole to 2.2mm x 1.5mm, of 3-4 flowers, horseshoe-shaped flowers to 35mm, white outside with purple veins, utricle to 9mm x 8mm, tube to 45mm x 13mm, 3-lobed limb to 12mm x 6mm. 6-ridged densely pubescent capsule to 120mm x 30mm.