| Enneapogon phleioides Roem. & Schult., 1817 |
| Enneapogon wrightii (S. Watson) Roshev., 1937 |
| Ensifolia Hitchc. & Chase, 1910 |
| Enteropogon Nees, 1836 |
| Enteropogon brandegeei (Vasey) Clayton, 1982 |
| Enteropogon chlorideus (J. Presl) Clayton, 1982 |
| Epicampes J. Presl, 1830 |
| Epicampes anomala Scribn. ex Beal, 1896 |
| Epicampes argentea (Vasey) M.E. Jones, 1912 |
| Epicampes berlandieri E. Fourn., 1885 |
| Epicampes bourgaei E. Fourn. ex Hemsl., 1885 |
| Epicampes bourgaei var. grandis (Vasey) M.E. Jones, 1912 |
| Epicampes bourgaei var. mutica E. Fourn., 1886 |
| Epicampes bourgeaei E. Fourn., 1886 |
| Epicampes clomena M.E. Jones, 1912 |
| Epicampes crassiculmis Piper, 1905 |
| Epicampes distichophylla Vasey, 1885 |
| Epicampes distichophylla var. mutica Scribn. ex Beal, 1896 |
| Epicampes ehrenbergii Mez, 1921 |
| Epicampes emersleyi (Vasey) Hitchc., 1920 |