Bromus catharticus

Bromus catharticus is a species of brome grass known by the common names rescuegrass, grazing brome, prairie grass, and Schrader's bromegrass. The specific epithet catharticus is Latin, meaning cathartic. The common name rescuegrass refers to the ability of the grass to provide forage after harsh droughts or severe winters. The grass has a diploid number of 42. It is native to South America but it can be found in other places, including Europe, Australia and North America, as an introduced species....read more on Wikipedia.