Annual or perennial slender grasses. Culms often
trailing. Leaf-blades lanceolate, often clasping culms, ligules membranous.
Inflorescence of subdigitate racemes, terminal and axillary, not spathate,
rachis internodes and pedicels filiform to linear. Sessile spikelets dorsally
or laterally compressed; lower glume membranous to coriaceous, convex, often
spinulose; upper lemma boat-shaped, entire, awned from low down on back,
stamens 2-3. Pedicelled spikelet well developed, reduced to a pedicel or
subulate point, completely suppressed.