Description from Flora of China
Stems slender, clustered, spreading by rhizomes to form small to large clumps, covered, especially in upper part, with fibrous, persistent leaf bases, otherwise green. Leaves 12-22, palmate; leaf sheaths fibrous, consisting of 2 layers of fibers, forming a square or diagonal mesh, with fibrous ligules at apices; hastula present; segments few to many, split to 1/2 or more their length, with minute spines along margins. Plants dioecious. Inflorescences branched to 3 orders, borne among leaves, covered with persistent bracts, these closely or loosely sheathing, bearing either all male or all female flowers, occasionally bisexual; flowers simple in structure, borne singly, male flowers with 6 stamens. Fruits variously colored, small, globose to ellipsoid or ovoid, usually 1-seeded, sometimes borne on short stalks; endosperm homogeneous; germination remote; eophylls undivided.
Eleven species: China, Indonesia (Sumatra), Laos, Thailand, Vietnam; five species (two endemic) in China.