| Aristida fendleriana Steud., 1855 |
| Aristida festucoides Steud. & Hochst., 1845 |
| Aristida filipendula Buckley, 1862 |
| Aristida flexuosa E. Fourn., 1885 |
| Aristida floridana (Chapm.) Vasey, 1885 |
| Aristida fournieriana Hitchc., 1935 |
| Aristida fugitiva Vasey ex S. Watson, 1889 |
| Aristida furcata P. Beauv., 1812 |
| Aristida geminiflora E. Fourn., 1886 |
| Aristida geniculata Raf., 1817 |
| Aristida gentilis Henrard, 1926 |
| Aristida geyeriana Steud., 1855 |
| Aristida gibbosa (Nees) Kunth, 1833 |
| Aristida glabrata (Vasey) Hitchc., 1924 |
| Aristida glauca (Nees) Walp., 1849 |
| Aristida gracilis Elliott, 1816 |
| Aristida gracilis var. depauperata A. Gray, 1867 |
| Aristida grisebachiana E. Fourn., 1886 |
| Aristida grisebachiana var. decolorata E. Fourn., 1886 |
| Aristida grisebachiana var. grisebachiana E. Fourn., 1886 |