| Eragrostis capitata (Nutt.) Nash, 1901 |
| Eragrostis caroliniana (Biehler) Scribn., 1894 |
| Eragrostis caudata E. Fourn., 1886 |
| Eragrostis chariis (Schult.) Hitchc., 1929 |
| Eragrostis chilensis (Moris) Nees, 1843 |
| Eragrostis chloromelas Steud., 1854 |
| Eragrostis cilianensis (All.) Vignolo ex Janch., 1907 |
| Eragrostis cilianensis subsp. megastachya (Koeler) Maire & Weiller, 1953 |
| Eragrostis ciliaris (L.) R. Br., 1818 |
| Eragrostis ciliaris var. ciliaris (L.) R. Br., 1818 |
| Eragrostis ciliaris var. laxa Kuntze, 1891 |
| Eragrostis ciliaris var. patens Chapm. ex Beal, 1896 |
| Eragrostis collocarpa K. Schum., 1895 |
| Eragrostis compacta Salzm. ex Steud., 1854 |
| Eragrostis conferta (Elliott) Trin., 1830 |
| Eragrostis conganta Steud., 1854 |
| Eragrostis contrerasii R.W. Pohl, 1977 |
| Eragrostis cordobensis Jedwabn., 1924 |
| Eragrostis curtipedicellata Buckley, 1862 |
| Eragrostis curvula (Schrad.) Nees, 1841 |