Perennial rhizomatous herb with winged erect to sometimes climbing stems. Paripinnate leaves to 180mm long, 14-18 leaflets to 50mm x 20mm sparsely puberulent or pubescent beneath with branched tendrils. Racemes to 200mm long with 5-14 flowers, flowers to 14mm long, calyx to 4mm long with 5 unequal teeth, calyx tube to 5mm x 1mm, purple corolla, wings and keel lavender to white