Climbing shrub with glabrescent stems. Leaves to 140mm x 80mm, glabrous above, pubescent or glabrous beneath. Axillary solitary dark purple flowers with yellow throat with purple markings, with bractlets to 8mm x 3mm. Dark purple calyx limb, throat yellow with purple striations, curved tube to 30mm x 6mm, 3-lobed limb 25mm diameter. Fruit capsule to 40mm x 20mm