Scandent or erect pubescent herb to 4m. Hirsute or pilose leaves to 75mm x 50mm with margins crenate-dentate or doubly dentate, scabrous above, white villous beneath. Axillary or terminal corymbs of 3-12 yellow flowers to 45mm long, green & purple sepals, calyx segments to 10mm x 2mm, yellow corolla with upper lip to 12mm x 15mm, lower lip 40mm long. Green fruit with brown spots 9mm long