| 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 |
| Aristida guineensis Trin. & Rupr., 1842 |
| Aristida gypsophila Beetle, 1981 |
| Aristida gypsophila f. diffusa Allred & Valdés-Reyna, 1997 |
| Aristida gypsophila f. gypsophila Beetle, 1981 |
| Aristida gypsophila f. gypsophiloides Allred & Valdés-Reyna, 1997 |
| Aristida hamulosa Henrard, 1926 |
| Aristida havardii Vasey, 1886 |
| Aristida hintonii Hitchc., 1935 |
| Aristida hitchcockiana Henrard, 1927 |