Inflorescence a solitary raceme, exserted from or enclosed by a narrow spatheole and gathered into a scanty or copious false panicle; raceme loose, with few spikelets (sometimes only 1), without homogamous spikelet pairs; internodes and pedicels long and slender.
Pedicelled spikelets as long as the sessile, linear-lanceolate, acuminate, usually glabrous, with a narrowly oblong to linear callus, sometimes the spikelet much reduced or quite absent and its pedicel likewise much reduced.
Ligule a short ciliolate membrane; leaf laminas linear.
Caryopsis narrowly ellipsoid to subcylindrical.
Annuals or perennials.