| Gouinia E. Fourn. ex Benth. & Hook. f., 1883 |
| Gouinia brandegei (Vasey) Hitchc., 1903 |
| Gouinia guatemalensis (Hack.) Swallen, 1934 |
| Gouinia isabelensis J.J. Ortíz, 1993 |
| Gouinia latifolia (Griseb.) Vasey, 1895 |
| Gouinia latifolia var. guatemalensis (Hack.) J.J. Ortíz, 1993 |
| Gouinia longiramea Swallen, 1934 |
| Gouinia mexicana (Scribn.) Vasey, 1895 |
| Gouinia papillosa Swallen, 1934 |
| Gouinia polygama E. Fourn., 1885 |
| Gouinia polygama var. major E. Fourn., 1886 |
| Gouinia ramosa Swallen, 1934 |
| Gouinia virgata (J. Presl) Scribn., 1897 |
| Gouinia virgata var. robusta J.J. Ortíz, 1993 |
| Gouinia virgata var. virgata (J. Presl) Scribn., 1897 |
| Gouiniinae P.M. Peterson & Columbus, 2007 |
| Goulardia Husn., 1899 |
| Gouldochloa Valdés-Reyna, Morden & S.L. Hatch, 1986 |
| Gouldochloa curvifolia Valdés-Reyna, Morden & S.L. Hatch, 1986 |
| Gramen Krause, 1914 |