| 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 |
| Poinsettia coccinea Dressler, 1961 |
| Poinsettia colorata (Engelm.) Dressler, 1961 |
| Poinsettia cornastra Dressler, 1975 |
| Poinsettia cuphosperma (Engelm.) Small, 1903 |
| Poinsettia cyathophora (Murray) Klotzsch & Garcke, 1860 |
| Poinsettia dentata (Michx.) Klotzsch & Garcke, 1860 |
| Poinsettia edwardsii Klotzsch & Garcke, 1860 |
| Poinsettia eriantha (Benth.) Rose & Standl., 1912 |
| Poinsettia frangulaefolia (Kunth) Klotzsch & Garcke, 1860 |
| Poinsettia geniculata (Ortega) Klotzsch & Garcke, 1860 |
| Poinsettia graminifolia (Michx.) Millsp., 1909 |
| Poinsettia havanensis (Willd. ex Schltdl. & Cham.) Small, 1903 |