| Andropogon gerardi Vitman, 1792 |
| Andropogon gerardi subsp. hallii (Hack.) Wipff, 1996 |
| Andropogon gerardi subsp. x chrysocomus (Nash) Wipff, 1996 |
| Andropogon gerardi var. gerardi Vitman, 1792 |
| Andropogon giganteus Ten., 1836 |
| Andropogon glaber (Pers.) Raspail, 1825 |
| Andropogon glabratus Trin. ex E. Fourn., 1886 |
| Andropogon glaucescens Schltdl. ex Hack., 1889 |
| Andropogon glaucus Torr., 1824 |
| Andropogon glomeratus (Walter) Britton, Sterns & Poggenb., 1888 |
| Andropogon glomeratus subsp. reinoldii (León) Catasús, 1996 |
| Andropogon glomeratus var. abbreviatus (Hack.) Scribn., 1900 |
| Andropogon glomeratus var. corymbosus (Chapm. ex Hack.) Scribn., 1900 |
| Andropogon glomeratus var. glomeratus (Walter) Britton, Sterns & Poggenb., 1888 |
| Andropogon glomeratus var. hirsutior (Hack.) C. Mohr, 1897 |
| Andropogon glomeratus var. pumilus (Vasey) Vasey ex L.H. Dewey, 1894 |
| Andropogon glomeratus var. tenuispatheus Nash, 1903 |
| Andropogon gracilior (Hack.) Nash ex Small, 1903 |
| Andropogon gracilis J. Presl, 1830 |
| Andropogon gyrans Ashe, 1898 |