Bouteloua hirsutaBouteloua hirsuta, commonly known as hairy grama, is a perennial short prairie grass that is native throughout much of North America, including the Great Plains and Canadian Prairies region, as well as Mexico and Guatemala.DescriptionB. hirsuta is a warm-season grass growing 10–20 in long; the rachis extends beyond spikelets. It is used primarily for grazing.Distribution and habitatHairy grama prefers rocky slopes, as well as dry yet sandy areas between.