Liana with glabrescent branchlets. Pinnate or bipinnate leaves with 13 leaflets & sometime a simple tendril, leaflets to 270mm x 75mm, glabrous above & pilose beneath. Racemes with bracts to 3mm long & bracteoles to 5mm x 1mm, 55mm wide yellow flowers, coriaceous calyx to 7mm x 8mm & minutely 5-toothed, yellow corolla to 40mm x 15mm with tube 30mm long & lobes 10mm long. Brown lepidote slightly puberulous capsule to 880mm x 25mm.