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Tufted or stoloniferous perennials. Leaf-blades flat; ligule a very short ciliate membrane. Inflorescence a single raceme embraced below by the subtending sheath, borne in the upper axils of the culm; racemes tough, dorsally compressed; internodes thickened, clavate, nearly always obliquely articulated, fused to the adjacent pedicel. Sessile spikelet dorsally compressed; lower glume narrowly elliptic, rigidly herbaceous, broadly convex, 2-keeled, smooth, indistinctly winged above, obtuse, caudate or bifid; upper glume obtuse to long acuminate; lower floret reduced to a hyaline lemma; upper lemma entire and awnless. Caryopsis narrowly obovoid, slightly dorsally compressed. Pedicelled spikelet not unlike the sessile; pedicel flattened, broadly linear.
Sessile spikelet dorsally compressed; callus obtuse to cuneate, rarely truncate; inferior glume narrowly elliptic, rigidly herbaceous, broadly convex, 2-keeled, smooth, indistinctly winged above, obtuse, caudate or bifid at the apex; superior glume obtuse to long-acuminate; inferior floret reduced to a hyaline lemma; superior lemma entire and awnless.
Inflorescence a single axillary raceme embraced below by the subtending leaf sheath; racemes tough, dorsally compressed; internodes thickened, clavate, nearly always obliquely articulated, fused to the adjacent pedicel.
Pedicelled spikelet similar to the sessile spikelet but truncate at the base and without a callus; pedicel flattened, broadly linear.
Caryopsis narrowly obovoid, slightly dorsally compressed.
Caespitose or stoloniferous, mostly rambling perennials.
Ligule a very short ciliate membrane; leaf laminas flat.
