Setaria
(from seta, a bristle; alluding to the involucre of bristles surrounding the spikelets). ORD. Gramineae. A genus comprising about ten species of stove, greenhouse, or hardy annual, sometimes tall grasses, broadly dispersed over tropical and temperate regions. Spikelets ovate, articulated with the pedicels in a dense, cylindric, terminal panicle, as in Panicum, but awnless, and with stout, rough bristles at the base on one side. Leaves flat. The genus, which has no horticultural value, is represented in Britain by S. viridis (Bottle Grass; Green Fox-tail Grass). S. verticillata has become naturalised in cultivated fields.