| 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 |
| Galium microphyllum A. Gray, 1852 |
| Galium moranii Dempster, 1970 |
| Galium moranii subsp. aculeolatum (Dempster) Dempster, 1978 |
| Galium moranii subsp. moranii Dempster, 1970 |
| Galium nelsonii Greenm., 1898 |
| Galium nuttallii A. Gray, 1852 |
| Galium nuttallii subsp. nuttallii A. Gray, 1852 |
| Galium obstipum Schltdl., 1835 |