Climbing palm to 8m. Leaves to 4m long, leaf sheaths armed with spines to 45mm x 4mm, spines around mouth to 180mm long. 60 pairs of leaflets to 450mm x 20mm armed with black bristles beneath. Inflorescence about 750mm long with 6 rachillae to 80mm x 3mm with bracts to 15mm x 8mm.