tall palms, stem up to 10 m long. Leaves grouped at stem-apex, pinnate, leaflets reduplicate.
Flowers unisexual, monoecious. Inflorescence axillary, peduncle supported by
spathes. Male inflorescence spikes, several, finger-like, flowers dense. Male
flowers : sepals 3-lobed, oblong or lanceolate, petals 3-lobed, distinct,
stamens 6, filaments basally connate. Female inflorescence subcapitate. Female
flowers : sepals 3-lobed, petals 3-lobed, enlarged after flowering, ovary
3-loculed, style short, stigmas 3, linear. Fruit ovoid or obovoid, endocarp
woody, very hard, 1-3 seeded. Seeds with sublateral embryo.