Stoloniferous perennials. Leaf-blades flat or folded; ligule a ciliate membrane. Inflorescence an umbel of spikes or spike-like racemes with spikelets arranged in 2 rows along one side of each of the rays of the umbel. Spikelets sessile or subsessile, 1-flowered; glumes 2, subequal, 1-nerved, keeled, more or less persistent, shorter than the spikelet; lemma 3-nerved, laterally compressed, keeled, unawned.
About 10 species, from tropical and sub-tropical countries, principally Africa; 6 occurring in Australia, perhaps 2 of them native, 2 species with naturalised elements in Victoria.