| Poinsettia heterophylla (L.) Klotzsch & Garcke, 1860 |
| Poinsettia morisoniana (Klotzsch) Klotzsch & Garcke, 1860 |
| Poinsettia pedunculata Klotzsch, 1856 |
| Poinsettia pulcherrima Graham, 1836 |
| Poinsettia radians (Benth.) Klotzsch & Garcke, 1860 |
| Poinsettia restiacea (Benth.) Dressler, 1961 |
| Poinsettia strigosa (Hook. & Arn.) Arthur, 1912 |
| Polyboea Klotzsch, 1850 |
| Polyboea crassifolia (Benth.) Klotzsch, 1851 |
| Polyboea laurifolia Klotzsch, 1851 |
| Pseudoglochidion Gamble, 1925 |
| Psilostachys Turcz., 1843 |
| Pycnosandra Blume, 1856 |
| Redia Casar., 1843 |
| Ricinella Müll. Arg., 1865 |
| Ricinella barbinervis (Schltdl. & Cham.) Müll. Arg., 1865 |
| Ricinella myricifolia (Scheele) Müll. Arg., 1865 |
| Ricinella oaxacana Müll. Arg., 1865 |
| Ricininae Griseb., 1859 |
| Ricinocarpos Desf., 1817 |