| 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 |
| Senegalia tenuifolia (L.) Britton & Rose, 1928 |
| Senegalia wrightii (Benth.) Britton & Rose, 1928 |
| Senegalia x emoryana (Benth.) Britton & Rose, 1928 |
| Senegalia x zamudioi Seigler, Ebinger & C.E. Glass, 2013 |
| Senna Mill., 1754 |
| Senna acatlanensis C. Rojas-Mart. & A. Delgado, 2019 |
| Senna alata (L.) Roxb., 1832 |