Stems clustered, to 3 m tall, 3-5 cm in diam. Leaves spirally arranged; petioles not seen; rachis to 2 m; pinnae 11-19 per side of rachis, lanceolate, with 2 pronounced lobes, regularly arranged, spreading in same plane; middle pinnae to 40 × 10 cm. Inflorescences unisexual, female terminal and male lateral; male inflorescences to 35 cm, erect; rachillae to 16 cm; male flowers to 8 mm; stamens 3; female inflorescences to 35 cm, erect; rachillae 20-30 cm; female flowers ca. 4 mm. Fruits red, oblong, to 1.3 × 0.7 cm.