| Pilinophytum lindheimeri Engelm. & A. Gray, 1845 |
| Pleradenophora Esser, 2001 |
| Pleradenophora bilocularis (S. Watson) Esser & A.L. Melo, 2013 |
| Pleradenophora longicuspis (Standl.) Esser, 2001 |
| Pleradenophora lottiae (McVaugh) A.L. Melo & Esser, 2013 |
| Pleradenophora tikalana (Lundell) A.L. Melo & Esser, 2013 |
| Pleradenophora tuerckheimiana (Pax & K. Hoffm.) A.L. Melo & Esser, 2013 |
| Pleuradena Raf., 1833 |
| Pleuradena coccinea Raf., 1833 |
| Plukenetia L., 1753 |
| Plukenetia angustifolia Standl., 1929 |
| Plukenetia carabiasiae J. Jiménez Ram., 1993 |
| Plukenetia penninervia Müll. Arg., 1865 |
| Plukenetia stipellata L.J. Gillespie, 1993 |
| Plukenetia volubilis L., 1753 |
| Plukenetieae Hutch., 1969 |
| Plukenetiinae Benth., 1880 |
| Podostachys Klotzsch, 1841 |
| Poinsettia Graham, 1836 |
| Poinsettia barbellata Small, 1903 |