Annuals. Leaf-blades flat. Inflorescence a lax or dense spike-like panicle. Spikelets (1-)2-5(-10)-flowered, all alike, the rhachilla produced or not; glumes subequal or unequal, keeled, with hyaline margins; lemmas usually a little longer than the glumes, 5-nerved with hyaline margins, acute or obtuse, with a straight or slightly curved awn from just below the bifid tip; callus obscure, glabrous or shortly hairy; stamens 3; stigmas 2.