Culms lateral. Leaves basal and 1 or 2 on upper part of culm. Radical leaves with sheath elongate, pipelike; leaf blade lanceolate or narrowly elliptic, narrowed toward both ends; culm leaves much reduced, sheathlike. Inflorescence paniculate; partial panicles subtended by a sheathlike bract bearing a short blade much surpassed by the subtended partial panicle. Spikes androgynous.
Ten to 12 species: S China, India, Laos, Vietnam; nine species (six endemic) in China.