| Pomaria canescens (Fisher) B.B. Simpson, 1998 |
| Pomaria fruticosa (S. Watson) B.B. Simpson, 1998 |
| Pomaria glandulosa Cav., 1799 |
| Pomaria humilis M. Martens & Galeotti, 1843 |
| Pomaria jamesii (Torr. & A. Gray) Walp., 1843 |
| Pomaria melanosticta S. Schauer, 1847 |
| Pomaria multijuga (S. Watson) B.B. Simpson, 1998 |
| Pomaria wootonii (Britton) B.B. Simpson, 1998 |
| Poponax Raf., 1838 |
| Poponax attenuata Britton & Rose, 1928 |
| Poponax canescens Britton & Killip, 1936 |
| Poponax cowellii Britton & Rose, 1928 |
| Poponax glandulifera (S. Watson) Britton & Rose, 1928 |
| Poponax houghii Britton & Rose, 1928 |
| Poponax pennatula (Schltdl. & Cham.) Britton & Rose, 1928 |
| Poponax schaffneri (S. Watson) Britton & Rose, 1928 |
| Prosopidastrum Burkart, 1964 |
| Prosopidastrum globosum (Gillies & Arn.) Burkart, 1964 |
| Prosopidastrum mexicanum (Dressler) Burkart, 1964 |
| Prosopis L., 1767 |