Climbing palm to 30m. Leaves to 2.54m long with spines to 110mm x 8mm, 53-65 leaflets per side, longest to 560mm x 32mm. Staminate inflorescence to 4m long with rachillae to 110mm x 20mm & bracts to 2mm x 0.8mm,flowers 3mm x 1mm. Pistillate inflorescence to 4.4m long with rachillae to 260mm x 5mm & bracts to 24.5mm x 4mm, flowers with calyx to 3.5mm & petals to 2mm x 1.5mm. Beaked fruit to 18mm x 10mm.