Stems clustered, to 1.5 m tall, 2-2.5 cm in diam. Leaves spirally arranged; petioles 1-1.7 m; rachis 0.45-1.2 m; pinnae 5-7 per side of rachis, lanceolate, with 2 lobes, regularly arranged, spreading in same plane; middle pinnae 30-40 × 6-9 cm. Inflorescences unisexual, subtended by smaller leaves, male or female terminal; male inflorescences 12-25 cm, pendulous; rachillae many, 0.5-1.5 cm, short and crowded on rachis; male flowers to 5 mm; stamens 6 or 7; female inflorescences to 35 cm, pendulous; rachillae many, to 6 cm; female flowers ca. 2 mm. Fruits yellow, ovoid to ellipsoid, to 1.5 × 1 cm.