| Photinia oblongifolia Standl., 1929 |
| Photinia parviflora L.O. Williams, 1972 |
| Physocarpus (Cambess.) Raf., 1838 |
| Physocarpus intermedius (Rydb.) C.K. Schneid., 1906 |
| Physocarpus monogynus (Torr.) J.M. Coult., 1891 |
| Physocarpus opulifolius (L.) Maxim., 1879 |
| Physocarpus opulifolius var. intermedius (Rydb.) B.L. Rob., 1908 |
| Potentilla L., 1753 |
| Potentilla anserina L., 1753 |
| Potentilla argyrocoma (Rydb.) Jeps., 1925 |
| Potentilla argyrocoma var. moranii (Ertter & Reveal) Mosyakin & Shiyan, 2020 |
| Potentilla biennis Greene, 1891 |
| Potentilla butandae Rzed. & Calderón, 2005 |
| Potentilla candicans Humb. & Bonpl. ex Nestl., 1816 |
| Potentilla donnell-smithii Focke, 1891 |
| Potentilla durangensis Rydb., 1908 |
| Potentilla ehrenbergiana Schltdl., 1839 |
| Potentilla exsul Standl., 1937 |
| Potentilla glandulosa Lindl., 1833 |
| Potentilla goldmanii Painter ex Rydb., 1908 |