Perennials. Inflorescence a contracted, often interrupted, panicle. Spikelets 1-flowered, disarticulating above the glumes; floret bisexual, exceeding the glumes. Glumes persistent, 3-5-nerved, acute or acuminate, awned or awnless. Lemma subcylindric, dorsally flattened, 3-nerved, becoming indurate at maturity, without an articulation; basal callus densely barbate; awns 3, glabrous, scabrid, rigid, spirally contorted at base when mature.