Liana with slightly flattened glabrous stems. Leaves to 225mm x 185mm, glabrous above, hairy beneath. Axillary panicles to 150mm long with puberulous bracts 2.5mm long, bright yellow or greenish-yellow flowers with curved tube and limb, tube to 50mm x 20mm, 3-lobed limb, lobes to 90mm x 10mm.