gregarious palms of tidal swamps, stems creeping, forming large colonies.
Leaves 3-15, pinnate, segments lanceolate, leaf-sheaths open, petioles stout,
pinnae in same plane. Inflorescence a spadix, infrafoliar, branched to 5 or 6
orders, male flowers on catkin-like
branches, female flowers in a globose, terminal head, spathes numerous. Male flowers mixed with
bristle-like bracteoles. Female flowers larger than males, perianth 6, similar,
staminodes absent, carpels 3, ovules 3. Fruits densely arranged in large,
head-shaped clusters of many fruits,
usually 1-seeded. Seeds grooved, embryo basilar.