| Field notes | Subadult. Stem to 2 m, few spines, spines yellowish-black, to 1.8 cm. Sheath 74 cm, petiole 25 cm, rachis 84 cm; stem, petiole, sheath and rachis green; blade 110x60 cm; pinnae 9-12 per side, 40x5 cm, regularly inserted, sigmoid, filamentous, proximal margins nearly non-spiny. No tomentum |