Perennials. Inflorescence of short racemes borne along a central axis; racemes terminating in an inconspicuous point or bristle. Spikelets abaxial, dorsally flattened, ovate, often borne in 2 neat rows. Lower glume shorter than spikelet; upper as long as the spikelet; lower lemma resembling the upper glume. Upper lemma crustaceous, as long as spikelet, acute; upper palea acute.