| Pilocarpus longipes Rose, 1897 |
| Pilocarpus racemosus Vahl, 1797 |
| Pilocarpus racemosus subsp. racemosus Vahl, 1797 |
| Pilocarpus racemosus var. racemosus Vahl, 1797 |
| Pilocarpus racemosus var. yucatanus Kaastra, 1977 |
| Polyaster Hook. f., 1862 |
| Polyaster boronioides Hook. f., 1862 |
| Ptelea L., 1753 |
| Ptelea aptera Parry, 1884 |
| Ptelea obtusata Greene, 1906 |
| Ptelea polyadenia Greene, 1906 |
| Ptelea trifoliata L., 1753 |
| Ptelea trifoliata subsp. angustifolia (Benth.) V.L. Bailey, 1962 |
| Ptelea verrucosa Greene, 1906 |
| Ptelea viscosa L., 1753 |
| Ravenia Vell., 1829 |
| Ravenia spectabilis (Lindl.) Engl., 1874 |
| Ruta L., 1753 |
| Ruta altera Mill., 1768 |
| Ruta bracteosa DC., 1824 |