Climbing palm to 10m. Stem sheaths armed with minute prickles & spines to 10mm long. Flagellum to 3m long. Leaf to 1.1m, about 30 leaflets per side to 350mm x 20mm, armed with bristles. Inflorescences to 3m long, male rachillae to 20mm, female rachillae to 100mm. mature fruit to 9mm diameter with beak to 1mm x 0.8mm.