| Senna durangensis (Rose) H.S. Irwin & Barneby, 1979 |
| Senna durangensis var. durangensis (Rose) H.S. Irwin & Barneby, 1979 |
| Senna durangensis var. iselyi (H.S. Irwin & Barneby) H.S. Irwin & Barneby, 1979 |
| Senna exigua Roxb., 1832 |
| Senna foetidissima (Sessé & Moc. ex G. Don) H.S. Irwin & Barneby, 1982 |
| Senna foetidissima var. foetidissima (Sessé & Moc. ex G. Don) H.S. Irwin & Barneby, 1982 |
| Senna foetidissima var. grandiflora (Benth.) H.S. Irwin & Barneby, 1982 |
| Senna fruticosa (Mill.) H.S. Irwin & Barneby, 1982 |
| Senna galegifolia (L.) Barneby & Lourteig, 1988 |
| Senna galeottiana (M. Martens) H.S. Irwin & Barneby, 1982 |
| Senna guatemalensis (Donn. Sm.) H.S. Irwin & Barneby, 1982 |
| Senna guatemalensis var. calcarea H.S. Irwin & Barneby, 1982 |
| Senna guatemalensis var. chiapensis (Standl.) H.S. Irwin & Barneby, 1982 |
| Senna guatemalensis var. hidalgensis H.S. Irwin & Barneby, 1982 |
| Senna guatemalensis var. scopulorum (Britton & Rose) H.S. Irwin & Barneby, 1982 |
| Senna hayesiana (Britton & Rose) H.S. Irwin & Barneby, 1982 |
| Senna hirsuta (L.) H.S. Irwin & Barneby, 1979 |
| Senna hirsuta var. glaberrima (M.E. Jones) H.S. Irwin & Barneby, 1979 |
| Senna hirsuta var. hirsuta (L.) H.S. Irwin & Barneby, 1979 |
| Senna hirsuta var. hirta H.S. Irwin & Barneby, 1982 |