Source: Magness et al. 1971
Some 18 species of Bouteloua, the grama grasses, are native in the United States, mainly throughout the Great Plains and Western States. They are summer growers, and the amount of growth produced is dependent on available moisture. Most species cure naturally, so growth from a previous season is palatable for livestock. They are prized as forage producers on range and pasture land. The three most valuable species are side-oats grama, black grama, and blue grama.