Tuberous-rooted herbaceous twiner with glabrescent beranches, stems to 2m long. Leaves to 195mm x 40mm, glabrescent above, pubescent beneath. Solitary flowers or occasional axillary racemes, greenish-yellow flowers with red-brown lines, bright yellow to gold inside, utricle to 13mm long, tube to 25mm long, lobes to 5mm long, dark brown on margins & bright yellow inside. Fruit to 20mm x 15mm.