| Falona Adans., 1763 |
| Falona (Adans.) Hack., 1887 |
| Fasciculata (Hitchc.) Honda, 1930 |
| Fasciculochloa B.K. Simon & C.M. Weiller, 1995 |
| Fasciculochloa sparshottiorum B.K. Simon & C.M. Weiller, 1995 |
| Fendleria Steud., 1854 |
| Fendleria rhynchelytroides Steud., 1854 |
| Festuca L., 1753 |
| Festuca (Hesperochloa) Piper, 1906 |
| Festuca (Stenofestuca) Honda, 1930 |
| Festuca (Vulpia) (C.C. Gmel.) Hack., 1887 |
| Festuca aequipaleata E. Fourn., 1885 |
| Festuca aguana E.B. Alexeev, 1981 |
| Festuca amplissima Rupr., 1842 |
| Festuca amplissima var. elliptica Beal, 1896 |
| Festuca aquatica Bosc ex Roem. & Schult., 1817 |
| Festuca arida Elmer, 1903 |
| Festuca arizonica Vasey, 1893 |
| Festuca arundinacea Schreb., 1771 |
| Festuca asperella E.B. Alexeev, 1981 |