| Agave (Agave) rhodacantha Trel., 1920 |
| Agave (Agave) roseana Trel., 1911 |
| Agave (Agave) rubescens Salm-Dyck, 1834 |
| Agave (Agave) rumphii Jacobi, 1865 |
| Agave (Agave) salmiana Otto ex Salm-Dyck, 1859 |
| Agave (Agave) salmiana subsp. crassispina (Trel.) Gentry, 1982 |
| Agave (Agave) salmiana subsp. salmiana Otto ex Salm-Dyck, 1859 |
| Agave (Agave) salmiana subsp. tehuacanensis (Karw. ex Salm-Dyck) García-Mend., 2011 |
| Agave (Agave) salmiana var. angustifolia A. Berger, 1915 |
| Agave (Agave) salmiana var. cochlearis (Jacobi) A. Terracc., 1885 |
| Agave (Agave) salmiana var. ferox (K. Koch) Gentry, 1982 |
| Agave (Agave) salmiana var. gracilispina Rol.-Goss., 1896 |
| Agave (Agave) salmiana var. recurvata Jacobi, 1866 |
| Agave (Agave) salmiana var. salmiana Otto ex Salm-Dyck, 1859 |
| Agave (Agave) saundersii Hook. f., 1865 |
| Agave (Agave) scabra Salm-Dyck, 1797 |
| Agave (Agave) scabra subsp. maderensis Gentry, 1982 |
| Agave (Agave) scabra subsp. potosiensis Gentry, 1982 |
| Agave (Agave) scabra subsp. scabra Salm-Dyck, 1797 |
| Agave (Agave) scabra subsp. zarcencis Gentry, 1982 |