Tree to 5 m. tall, with single green ringed arundinaceous trunk 2-3 cm. thick, sometimes with brace-roots at the base: leaves irregularly pinnate, glabrous, the blades 1 m. and more long and bearing 8-10 subopposite drooping pinnae or seg-ments either side the very slender angled rachis; pinnae or parts from 1 to 12 cm. broad and 30-50 cm. long, lanceolate and long-pointed, lacking midrib but pro-vided with several or many strong parallel nerves 5-10 mm. apart; petiole 50-75 cm. long, slender, smooth, grooved on upper face, sheathing at base: spadix a broom-like structure with 20 or more very slender ascending or divaricate rachillae arising from a continuing and terminating an erect completely sheathed peduncle; flowers very' small and often overlooked, flat-topped, 4-9 of them in alternating acervuli, of which the basal one is pistillate: fruit oblong, 15 mm. long, lemon-yellow to light orange but drying black, sparse on the rachillae inasmuch as the pistillate flowers are single in each of the scattered acervuli; albumen invaded by lateral dark-colored projections.
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