Climbing herb with pubescent stems to 2m. Dentate leaves to 47mm x 28mm, pubescent above, tomentose beneath. 8-16 yellow flowers in corymbs or cymes with pubescent bracts, pubescent calyx lobes to 6.5mm long, yellow to greenish-white corolla to 23mm long, red-brown marked or spotted inside, upper lip to 4mm 9mm, lower lip to 22mm long. Ovoid capsule to 9mm long.