Glabrous tendril vine with striate stems. 3-lobed leaves to 95mm x 140mm, mucronate lobes, lateral lobes to 50mm x 40mm, central lobe to 60mm x 45mm. Inflorescence with 3 bracts with glabdular serrate margins, to 15mm x 9mm, flowers to 110mm diameter, wine-red sepals to 50mm x 15mm, bright purple petals, violet filaments, white at base in 6-7 series.