| 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 |
| Prosopis articulata S. Watson, 1889 |
| Prosopis bonplanda P.R. Earl & Lux, 1991 |
| Prosopis chilensis (Molina) Stuntz, 1914 |
| Prosopis chilensis var. glandulosa (Torr.) Standl., 1926 |
| Prosopis chilensis var. velutina (Wooton) Standl., 1926 |
| Prosopis cinerascens (A. Gray) Benth., 1875 |
| Prosopis domingensis DC., 1825 |
| Prosopis dulcis Kunth, 1822 |
| Prosopis emoryi Torr., 1848 |
| Prosopis glandulosa Torr., 1827 |