| Poincianella guanensis Britton, 1930 |
| Poincianella laxa (Benth.) Britton & Rose, 1930 |
| Poincianella melanadenia (Rose) Britton & Rose, 1930 |
| Poincianella mexicana (A. Gray) Britton & Rose, 1930 |
| Poincianella nelsonii Britton & Rose, 1930 |
| Poincianella ortegae (Standl.) Britton & Rose, 1930 |
| Poincianella palmeri (S. Watson) Britton & Rose, 1930 |
| Poincianella pannosa (Brandegee) Britton & Rose, 1930 |
| Poincianella phyllanthoides (Standl.) Britton & Rose, 1930 |
| Poincianella placida (Brandegee) Britton & Rose, 1930 |
| Poincianella recordii (Britton & Rose) Britton & Rose, 1930 |
| Poincianella robinsoniana Britton & Rose, 1930 |
| Poincianella standleyi Britton & Rose, 1930 |
| Poincianella tampicoana Britton & Rose, 1930 |
| Poincianella yucatanensis (Greenm.) Britton & Rose, 1930 |
| Poiretia Vent., 1807 |
| Poiretia punctata (Willd.) Desv., 1813 |
| Poiretia scandens Vent., 1807 |
| Pomaria Cav., 1799 |
| Pomaria austrotexana B.B. Simpson, 1998 |