Glabrous vine with 3-4 angled striate stems. Lobed leaves to 80mm x 90mm, lobes to 70mm x 50mm. Many-flowered corymbs to 150mm long with bracts to 1.5mm long, glabrous sepals, outer sepals to 6mm long, inner sepals to 8mm long, purple corolla 50mm x 8mm. 4-valved capsule 12mm diameter