| Ichnanthus vicinus (F.M. Bailey) Merr., 1922 |
| Imperata Cirillo, 1792 |
| Imperata (Triarrhena) Maxim., 1859 |
| Imperata arundinacea Cirillo, 1792 |
| Imperata arundinacea var. africana Andersson, 1855 |
| Imperata arundinacea var. americana Andersson, 1855 |
| Imperata arundinacea var. indica Andersson, 1855 |
| Imperata brasiliensis Trin., 1832 |
| Imperata brasiliensis var. mexicana Rupr., 1842 |
| Imperata brevifolia Vasey, 1886 |
| Imperata caudata (G. Mey.) Trin., 1832 |
| Imperata contracta (Kunth) Hitchc., 1893 |
| Imperata contracta (Kunth) Kuhlm., 1922 |
| Imperata cylindrica (L.) P. Beauv., 1797 |
| Imperata cylindrica (L.) Raeusch., 1797 |
| Imperata cylindrica var. africana (Andersson) C.E. Hubb., 1944 |
| Imperata flexuosa Swallen, 1966 |
| Imperata longifolia Pilg., 1901 |
| Imperata sape (A. St.-Hil.) Andersson, 1855 |
| Indochloa Bor, 1954 |