Evergreen shrubby climber to 10m, thorny stems, young branches becoming glabrous. Leaves to 150mm x 60mm, glabrous above, hairy beneath becoming glabrescent. Solitary leaf-opposed flowers, hooked peduncles, 3 sepals to 6mm x 6mm, 6 greenish to white petals, 3 outer petals to 27mm x 8mm, inner 3 to 20mm x 6mm.