Liana to 30m or small tree to 3m, with striate glabrous branches. 3-5-foliolate glabrous leaves, central leaflet to 190mm x 90mm, lateral ones smaller. Sub-terminal panicles to 150mm x 40mm, velvet purple flowers with bractlets to 1mm long, yellow margins, 5 lobed calyx 3mm x 3mm, pink to purple corolla 10mm long, lobes to 5mm x 4.5mm