Foxtail

The genus includes over 100 species distributed in many tropical and temperate regions around the world,and members are commonly known as foxtail or bristle grasses.
Foxtail weed (Setaria) has wide leaf blades, much like the turf grass in which it may grow. The base of the leaves has fine hairs and the stem rises from a collar at the base of the leaf. Stems bear three- to ten-inch long spikes of flowers, which yield to seeds at the end of the season.