| Galium fuscum subsp. guerrericum Dempster, 1973 |
| Galium fuscum subsp. hypadenium (S. Schauer) Dempster, 1973 |
| Galium galeottianum Walp., 1846 |
| Galium geminiflorum M. Martens & Galeotti, 1844 |
| Galium glaberrimum Hemsl., 1878 |
| Galium hintoniorum B.L. Turner, 1996 |
| Galium hypadenium S. Schauer, 1847 |
| Galium hypocarpium (L.) Endl. ex Griseb., 1861 |
| Galium hystricocarpum Greenm., 1898 |
| Galium iltisii Dempster, 1978 |
| Galium jalapense Schltdl., 1835 |
| Galium juniperinum Standl., 1940 |
| Galium lacrimiforme Dempster, 1975 |
| Galium leucotrichum Hemsl., 1880 |
| Galium martirense Dempster & Stebbins, 1968 |
| Galium mechudoense Dempster, 1978 |
| Galium mexicanum Kunth, 1818 |
| Galium mexicanum subsp. asperrimum (A. Gray) Dempster, 1976 |
| Galium mexicanum subsp. flexicum Dempster, 1976 |
| Galium mexicanum subsp. mexicanum Kunth, 1818 |