Robust clustering climber to 20m. Stem sheaths to 35mm diameter. Leaf sheaths with spines to 40mm x 5mm. Flagellum to 4m long. Spiny leaves to 2.5m long armed beneath with spines to 10mm x 3mm. 62 pairs of leaflets, basal leaflets to 240mm x 12mm, mid-leaflets to 400mm x 27mm, apical leaflets to 90mm x 9mm. Pistillate inflorescence to 6.1m with spines & bracts to 5mm x 7mm & bracteoles to 4mm x 5.5mm, rachillae to 25mm x 4mm with bracts to 5mm x 7mm. Fruit to 15mm x 12mm.