Climber to 12m. Leaf sheath with spines. Leaf to 410mm long with 14-20 pairs of leaflets, leaflets to 185mm x 15mm. Staminate inflorescences to 300mm long, staminate rachillae 10mm long with 3-lobed sepals. Pistillate inflorescence to 1m long, rachillae to 300mm long. Fruit 14.2mm x 18.1mm.