| Pernettya tomasii Camp, 1939 |
| Pleuricospora A. Gray, 1868 |
| Pleuricospora fimbriolata A. Gray, 1868 |
| Polycodium Raf., 1818 |
| Polycodium kunthianum (Klotzsch) C.B. Rob., 1912 |
| Polycodium stamineum (L.) Greene, 1898 |
| Proclesia Klotzsch, 1851 |
| Proclesia veraguensis Klotzsch, 1851 |
| Pseva Raf., 1819 |
| Pseva umbellata (L.) Kuntze, 1891 |
| Pterospora Nutt., 1818 |
| Pterospora andromedea Nutt., 1818 |
| Pyrola L., 1753 |
| Pyrola angustifolia (Alef.) Hemsl., 1881 |
| Pyrola liebmannii Lange, 1868 |
| Pyrola maculata L., 1753 |
| Pyrola picta Sm., 1819 |
| Pyrola secunda L., 1753 |
| Pyrola secunda f. eucycla Fernald, 1926 |
| Pyrola secunda var. obtusata Turcz., 1848 |