Perennial woody liana to 18m, stem glabrescent developing corky bark when mature. leaves to 180mm x 80mm, glabrous above, villour beneath. Cauliflorous cymes of 3-4 flowers with bracteoles to 2.5mm x 1.8mm, horseshoe shaped flower to 60mm long, whitish-purple outside, sparsely hairy with parallel dark purple veins, glabrous inside. Inflated utricle to 9mm x 8mm with inflated tube to 12mm diameter, upper part to 32mm x 5mm, limb with 3 unequal lobes, lateral lobes to 14mm x 6mm, middle lobe to 7mm x 10mm. 6-ridged yellowish-green brown villous capsule to 60mm x 22mm.