| Senegalia painteri Britton & Rose, 1928 |
| Senegalia paniculata (Willd.) Killip, 1940 |
| Senegalia peninsularis Britton & Rose, 1928 |
| Senegalia picachensis (Brandegee) Britton & Rose, 1928 |
| Senegalia polyphylla (DC.) Britton & Rose, 1936 |
| Senegalia potosina Britton & Rose, 1928 |
| Senegalia purpusii (Brandegee) Britton & Rose, 1928 |
| Senegalia rekoana Britton & Rose, 1928 |
| Senegalia reniformis (Benth.) Britton & Rose, 1928 |
| Senegalia riparia (Kunth) Britton & Rose, 1936 |
| Senegalia riparioides Britton & Rose, 1928 |
| Senegalia roemeriana (Scheele) Britton & Rose, 1928 |
| Senegalia rufescens Britton & Rose, 1928 |
| Senegalia russelliana Britton & Rose, 1928 |
| Senegalia salazarii Britton & Rose, 1928 |
| Senegalia saltilloensis Britton & Rose, 1928 |
| Senegalia sericea (M. Martens & Galeotti) Britton & Rose, 1928 |
| Senegalia sororia (Standl.) Britton & Rose, 1928 |
| Senegalia subangulata (Rose) Britton & Rose, 1928 |
| Senegalia subsessilis Britton & Rose, 1928 |