| Chasea Nieuwl., 1911 |
| Chasea amara (Elliott) Nieuwl., 1911 |
| Chasea angustifolia (Elliott) Nieuwl., 1911 |
| Chasea capillaris (L.) Nieuwl., 1911 |
| Chasea dichotoma (L.) Nieuwl., 1911 |
| Chasea felxilis (Gatt.) Nieuwl., 1893 |
| Chasea virgata (L.) Nieuwl., 1911 |
| Chasechloa A. Camus, 1949 |
| Chasmanthieae W.V. Br. & B.N. Smith ex Sánchez-Ken & L.G. Clark, 2010 |
| Chasmanthium Link, 1827 |
| Chasmanthium curvifolium (Valdés-Reyna, Morden & S.L. Hacth) Wipff & S.D. Jones, 1990 |
| Chasmanthium latifolium (Michx.) H.O. Yates, 1966 |
| Chauvinia Steud., 1854 |
| Chennapyrum Á. Löve, 1982 |
| Chilochloa P. Beauv., 1812 |
| Chilochloa ventricosa P. Beauv. ex Steud., 1840 |
| Chimonobambusa Makino, 1914 |
| Chimonobambusa quadrangularis (Franceschi) Makino, 1914 |
| Chloammia Raf., 1825 |
| Chlorides Fisch. ex Regel, 1863 |