Tufted or shortly rhizomatous annuals or perennials. Leaf-blades flat; ligule a row of hairs. Inflorescence a panicle with spikelets shortly pedicellate, appressed and secund along the angular branches. Lower glume much reduced, cup-like; upper glume acute or acuminate, as long as the spikelet, hairy; lower floret sterile, its lemma equal to or slightly shorter than upper glume, its palea absent; lemma of fertile (upper) floret shorter than lower lemma, hardened, coarsely to finely transversely ridged, pointed or awned apically, palea subequal to and enclosed by lemma.
30 species, cosmopolitan in tropical or subtropical regions; 6 native and 1 introduced in Australia, 2 in Victoria.