Slender climbing rattan palm, stems to 12m. Leaf sheaths densely armed with brown spines to 50mm x 5mm & at mouth to 100mm long, leaves to 2m long armed on margins with claws, 50 leaflets per side, longest to leaflets to 280mm x 16mm with bristles on nerves beneath. Male spadix 2m+ divided into 6 branches, the longest to 200mm long