| Rhamnus obliqua Rose, 1903 |
| Rhamnus obtusifolia Hook. ex Torr. & A. Gray, 1840 |
| Rhamnus palmeri S. Watson, 1887 |
| Rhamnus pirifolia Greene, 1896 |
| Rhamnus polygama Jacq., 1760 |
| Rhamnus pompana M.C. Johnst. & L.A. Johnst., 1978 |
| Rhamnus pringlei Rose, 1903 |
| Rhamnus revoluta Rose, 1903 |
| Rhamnus rosei M.C. Johnst. & L.A. Johnst., 1978 |
| Rhamnus scandens Hill, 1768 |
| Rhamnus scopulorum (M.E. Jones) C.B. Wolf, 1938 |
| Rhamnus serrata Schult., 1819 |
| Rhamnus serrata var. guatemalensis L.A. Johnst., 1976 |
| Rhamnus serrata var. serrata Schult., 1819 |
| Rhamnus serrulata Kunth, 1825 |
| Rhamnus sharpii M.C. Johnst. & L.A. Johnst., 1978 |
| Rhamnus sphaerosperma Sw., 1788 |
| Rhamnus sphaerosperma var. mesoamericana L.A. Johnst. & M.C. Johnst., 1978 |
| Rhamnus spinosa Hemsl., 1878 |
| Rhamnus standleyana C.B. Wolf, 1938 |