Scandent herb to 5m long, villous stems. Leaves to 120mm x 75mm, white pilose above, pilose to lanate beneath, margins doubly serrate. 4-24 flowered cymes with bracts to 92mm x 54mm, yellow-green sepals to 14mm x 11mm, bright yellow corolla, upper lip 9mm x 12mm, lower lip 18mm x 18mm. Pilose to villous capsule 7mm long.