| Ricinus laevis DC., 1823 |
| Ricinus leucocarpus Bertol., 1824 |
| Ricinus lividus Jacq., 1781 |
| Ricinus macrocarpus Steud., 1841 |
| Ricinus macrocarpus var. nudus Popova, 1941 |
| Ricinus macrophyllus Bertol., 1824 |
| Ricinus medicus Forssk., 1775 |
| Ricinus medius J.F. Gmel., 1792 |
| Ricinus megalospermus Delile, 1827 |
| Ricinus messeniacus Heldr., 1899 |
| Ricinus metallicus Pax & K. Hoffm., 1919 |
| Ricinus microcarpus Popova, 1941 |
| Ricinus microcarpus subsp. spontaneus Popova, 1941 |
| Ricinus microcarpus var. atrovirens Popova, 1941 |
| Ricinus minor Mill., 1768 |
| Ricinus nanus Balb., 1813 |
| Ricinus obermannii Groenland, 1858 |
| Ricinus peltatus Noronha, 1790 |
| Ricinus perennis Steud., 1841 |
| Ricinus persicus Popova, 1926 |