| Agraulus P. Beauv., 1812 |
| Agraulus brevifolius Nees ex Torr., 1857 |
| Agrestis Bubani, 1901 |
| Agrestis alba (L.) Lunell, 1915 |
| Agrestis verticillata (Vill.) Bubani, 1901 |
| Agropyron Gaertn., 1770 |
| Agropyron arizonicum Scribn. & J.G. Sm., 1897 |
| Agropyron barbulatum Schur, 1853 |
| Agropyron brevifolium Scribn., 1898 |
| Agropyron caesium J. Presl & C. Presl, 1822 |
| Agropyron caninoides (Ramaley) Beal, 1896 |
| Agropyron caninoides var. pubescens Scribn. & J.G. Sm., 1897 |
| Agropyron caninum (L.) P. Beauv., 1812 |
| Agropyron caninum f. ciliatum (Scribn. & J.G. Sm.) Pease & A.H. Moore, 1910 |
| Agropyron caninum f. fernaldii Pease & A.H. Moore, 1910 |
| Agropyron caninum f. pilosifolium Pease & A.H. Moore, 1910 |
| Agropyron caninum f. violacescens Ramaley, 1894 |
| Agropyron caninum subsp. majus (Vasey) C.L. Hitchc., 1969 |
| Agropyron caninum var. majus Baumg., 1816 |
| Agropyron caninum var. mitchellii S.L. Welsh, 1974 |