Perennial (in ours). Inflorescence a panicle, the branches often deflexed. Spikelets laterally flattened. Florets 3, the lower 2 sterile and reduced to empty lemmas, the upper bisexual. Glumes 2. Sterile lemmas exceeding glumes, transversely rugose to smooth; fertile lemma shorter than the sterile ones, often hinged with the second sterile one. Styles 2.