| Field notes | Clustering, climbing rattan to 15m, stem 20m, leaves ecirrate, 1 .4m incl. petiole 20 cm, leaflets 50 per side, on upper side densely bristly, dark green, on lower side smooth, lucid pale green, rachis bristly, inflorescence arcuous, 1.3 m with 4 first order branches, branched to 3 orders, sheaths brownish green, armed with black spines in whorls, young shoots with green, smooth sheaths, leaves 70cm incl. 40cm petiole, leaflets 35 per side, with bristles on upper side, interlocking, leaflets extremely regular, close and regular, Vernacular: wi lum, Dialect: Iban |