Annual or perennial grasses. Leaf-blades flat,
sometimes aromatic, ligules membranous. Inflorescence a delicate panicle with
elongated central axis and capillary branches bearing short racemes, racemes
with 1-5 (-8) sessile spikelets, internodes and pedicels linear, with a hyaline
median line. Sessile spikelets dorsally compressed, callus very short, rounded,
pedicelled spikelets usually well- developed; lower glumes broadly convex to
slightly concave on back, abruptly rounded on the flanks; lower florets reduced
to a hyaline lemma, upper lemmas entire, with a glabrous or puberulous awn.