Ponderous tree, at maturity 10 m. and more tall and 2 m. in circumference at a meter above the ground: leaves standing more or less edgewise; petiole 30-60 cm. long; blade 5-6 m. long; -rachis very stout, double-furrowed above; pinnae stiff, 1 m. or more long and 4-6 cm. broad, more or less furfuraceous, midrib very strong but intermediate veins faint: staminate flowers ochroleucous at anthesis, much frequented by insects: great outer cymba 2-3 m. long: fruit oblong, 6 cm. or more long including calyx, 3 cm. thick, beak 7-8 mm. long, surface brown, smooth and closely striate when dry, 1-seeded, the nutlet covered with a hard thin fibrous husk.