Source: Magness et al. 1971
Some 43 species of Bromus are native in the United States. Some of these are important forage sources, others are troublesome weeds. Most bromes are highly palatable during succulent growth, even the ones classed as weeds. The leaf blades are flat, and the seed heads are open, spreading panicles. Species of major value in agriculture are field bromegrass, California brome, rescuegrass, smooth brome, mountain brome, cheatgrass, downy brome, Japanese chess, and hairy chess.