| Bouteloua racemosa var. aristosa (A. Gray) S. Watson & J.M. Coult., 1890 |
| Bouteloua radicosa (E. Fourn.) Griffiths, 1912 |
| Bouteloua rahmeri Phil., 1891 |
| Bouteloua ramosa Scribn. ex Vasey, 1890 |
| Bouteloua reederorum Columbus, 1999 |
| Bouteloua reflexa Swallen, 1939 |
| Bouteloua repens (Kunth) Scribn. & Merr., 1901 |
| Bouteloua rigidiseta (Steud.) Hitchc., 1933 |
| Bouteloua rigidiseta var. chihuahuana M.C. Johnst., 1982 |
| Bouteloua rothrockii Vasey, 1893 |
| Bouteloua scabra (Kunth) Columbus, 1999 |
| Bouteloua scorpioides Lag., 1816 |
| Bouteloua simplex Lag., 1805 |
| Bouteloua simplex var. actinochloides Henrard, 1921 |
| Bouteloua simplex var. rahmeri (Phil.) Henrard, 1921 |
| Bouteloua sonorae Griffiths, 1912 |
| Bouteloua stolonifera Scribn., 1891 |
| Bouteloua stricta Vasey, 1888 |
| Bouteloua tamaulipensis G.J. Pierce ex D.L. Pacheco & Columbus, 2008 |
| Bouteloua tenuis (P. Beauv. ex Kunth) Griseb., 1874 |