| Fabaceae | |
Senna absus
| (L.) Roxb. | Fl. Ind. 2: 340 | 1832 |
| Fabaceae | ! |
Senna acanthoclada
| (Griseb.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 570 | 1982 |
| Fabaceae | |
Senna acatlanensis
| Rojas-Mart. & A. Delgado | Phytotaxa 405(3): 114–118, f. 1–3 | 2019 |
| Fabaceae | |
Senna acclinis
| (F. Muell.) Randell | J. Adelaide Bot. Gard. 12(2): 200 | 1989 |
| Fabaceae | |
Senna aciphylla
| (Benth. ex A. Gray) Randell | J. Adelaide Bot. Gard. 12(2): 204 | 1989 |
| Fabaceae | ! |
Senna aculeata
| (Pohl ex Benth.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 478 | 1982 |
| Fabaceae | |
Senna acunae
| (Borhidi) Barreto & Yakovlev | Bot. Zhurn. (Moscow & Leningrad) 75: 1294 | 1990 |
| Fabaceae | ! |
Senna acuparata
| H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 202, 204–205, f. 20 | 1982 |
| Fabaceae | ! |
Senna acuruensis
| (Benth.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 506 | 1982 |
| Fabaceae | |
Senna acuta
| (Meyen ex J. Vogel) Zoellner & C. San Martin | Anales Mus. Hist. Nat. Valparaiso 16: 25 | 1983 |
| Fabaceae | |
Senna acutifolia
| Link | Handbuch 2: 140 | 1831 |
| Fabaceae | |
Senna acutifolia
| (Delile) Batka | Bot. Zeitung (Berlin) 7(11): 193 | 1849 |
| Fabaceae | ! |
Senna acutisepala
| (Benth.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 140 | 1982 |
| Fabaceae | ! |
Senna affinis
| (Benth.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 123 | 1982 |
| Fabaceae | ! |
Senna alata
| (L.) Roxb. | Fl. Ind. 2: 349 | 1832 |
| Fabaceae | |
Senna alcaparra
| (Phil.) Zoellner & C. San Martin | Anales Mus. Hist. Nat. Valparaiso 16: 24 | 1983 |
| Fabaceae | ! |
Senna alexandrina
| Mill. | Gard. Dict. (ed. 8) no. 1 | 1768 |
| Fabaceae | * |
Senna alexandrina
| Garsault | Fig. Pl. Med. 1: t. 42, f. B. & Expl. abr, t. 33 | 1765 |
| Fabaceae | ! |
Senna andrieuxii
| (Benth.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 585 | 1982 |
| Fabaceae | ! |
Senna angulata
| (Vogel) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 177 | 1982 |
| Fabaceae | |
Senna angustifolia
| (Vahl) Batka | Proc. Linn. Soc. London 2: 283 | 1854 |
| Fabaceae | ! |
Senna angustisiliqua
| (Lam.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 514 | 1982 |
| Fabaceae | |
Senna ankaranensis
| Du Puy & R. Rabev. | Legum. Madagascar 82–83 | 2002 |
| Fabaceae | |
Senna anthoxantha
| (Capuron) Du Puy | Kew Bull. 50(3): 581 | 1995 |
| Fabaceae | ! |
Senna aphylla
| (Cav.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 570 | 1982 |
| Fabaceae | ! |
Senna apiculata
| (M. Martens & Galeotti) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 273 | 1982 |
| Fabaceae | |
Senna appendiculata
| (Vogel) Wiersema | Taxon 38(4): 652 | 1989 |
| Fabaceae | ! |
Senna apsidoneura
| (H.S. Irwin & Barneby) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 246 | 1982 |
| Fabaceae | ! |
Senna araucarietorum
| H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 370–371 | 1982 |
| Fabaceae | |
Senna arborescens
| Roxb. | Fl. Ind. 2: 345 | 1832 |
| Fabaceae | |
Senna arequipensis
| H.S. Irwin & Barneby | | |
| Fabaceae | ! |
Senna argentea
| (Kunth) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 272 | 1982 |
| Fabaceae | ! |
Senna arida
| (Rose) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 275 | 1982 |
| Fabaceae | ! |
Senna aristeguietae
| H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 502–506, f. 30 | 1982 |
| Fabaceae | ! |
Senna armata
| (S. Watson) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 292 | 1982 |
| Fabaceae | ! |
Senna arnottiana
| (Gillies ex Hook.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 316 | 1982 |
| Fabaceae | |
Senna artemisioides
| (Gaudich. ex DC.) Randell | J. Adelaide Bot. Gard. 12(2): 220 | 1989 |
| Fabaceae | ** |
Senna artemisioides
| (Gaudich. ex DC.) Isely ex DC. | Native Natural. Legum. U.S. 44 | 1998 |
| Fabaceae | ! |
Senna atomaria
| (L.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 588 | 1982 |
| Fabaceae | ! |
Senna aurantia
| (Ruiz & Pav. ex G. Don) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 354 | 1982 |
| Fabaceae | |
Senna aurata
| Roxb. | Fl. Ind. 2: 342 | 1832 |
| Fabaceae | |
Senna auriculata
| (L.) Roxb. | Fl. Ind. 2: 349 | 1832 |
| Fabaceae | ! |
Senna australis
| (Vell.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 235 | 1982 |
| Fabaceae | ! |
Senna aversiflora
| (Herb.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 529 | 1982 |
| Fabaceae | ! |
Senna aymara
| H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 310–311 | 1982 |
| Fabaceae | |
Senna baccarinii
| (Chiov.) Lock | Kew Bull. 43(2): 339 | 1988 |
| Fabaceae | ! |
Senna bacillaris
| (L. f.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 111 | 1982 |
| Fabaceae | |
Senna barclayana
| (Sweet) Randell | J. Adelaide Bot. Gard. 11(1): 34 | 1988 |
| Fabaceae | |
Senna barnebyana
| Lass. | Brittonia 33(4): 513–514 | 1981 |
| Fabaceae | ! |
Senna bauhinioides
| (A. Gray) H.S. Irwin & Barneby | Phytologia 44(7): 499 | 1979 |
| Fabaceae | ! |
Senna benitoensis
| (Britton & P. Wilson) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 418 | 1982 |
| Fabaceae | ! |
Senna bicapsularis
| (L.) Roxb. | Fl. Ind. 2: 342 | 1832 |
| Fabaceae | |
Senna biglandularis
| A.O. Araujo & V.C. Souza | Rodriguésia 58(2): 360–362, fig. 1a–g | 2007 |
| Fabaceae | ! |
Senna birostris
| (Dombey ex Vogel) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 337 | 1982 |
| Fabaceae | |
Senna bosseri
| Du Puy & R. Rabev. | Legum. Madagascar 85 | 2002 |
| Fabaceae | |
Senna bracteosa
| D.B.O.S. Cardoso & L.P. Queiroz | Novon 18(2): 140–143, f. 1 | 2008 |
| Fabaceae | ! |
Senna brongniartii
| (Gaudich.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 322 | 1982 |
| Fabaceae | ! |
Senna burkartiana
| (Villa) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 372 | 1982 |
| Fabaceae | ! |
Senna cajamarcae
| H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 350–353, f. 27 | 1982 |
| Fabaceae | ! |
Senna cana
| (Nees & Mart.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 226 | 1982 |
| Fabaceae | ! |
Senna candolleana
| (Vogel) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 376 | 1982 |
| Fabaceae | |
Senna capensis
| (Thunb.) E. Mey. | Comm. Pl. Afr. Austr. 158 | 1836 |
| Fabaceae | |
Senna cardiosperma
| (F. Muell.) Randell | J. Adelaide Bot. Gard. 12(2): 244 | 1989 |
| Fabaceae | |
Senna catingae
| (Harms) L.P. Queiroz | Legum. Caatinga 105 | 2009 |
| Fabaceae | ! |
Senna caudata
| (Standl.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 197 | 1982 |
| Fabaceae | |
Senna cearensis
| Afr. Fern. | Albertoa, n.s. 7: 6, fig. 1 | 2000 |
| Fabaceae | ! |
Senna centranthera
| H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 468–471, f. 28 | 1982 |
| Fabaceae | ! |
Senna cernua
| (Balb.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 419 | 1982 |
| Fabaceae | ! |
Senna chacoensis
| (L. Bravo) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 569 | 1982 |
| Fabaceae | |
Senna chapmanii
| (Isely) Barreto & Yakovlev | Bot. Zhurn. (Moscow & Leningrad) 75: 1295 | 1990 |
| Fabaceae | ! |
Senna chloroclada
| (Harms) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 565 | 1982 |
| Fabaceae | ! |
Senna chrysocarpa
| (Desv.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 171 | 1982 |
| Fabaceae | |
Senna clavigera
| (Domin) Randell | J. Adelaide Bot. Gard. 11(1): 39 | 1988 |
| Fabaceae | ! |
Senna cobanensis
| (Britton) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 250 | 1982 |
| Fabaceae | |
Senna coimbrae
| M. Nee & Barneby | Brittonia 45(2): 159–161 | 1993 |
| Fabaceae | ! |
Senna collicola
| H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 412–413 | 1982 |
| Fabaceae | ! |
Senna confinis
| (Greene) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 278 | 1982 |
| Fabaceae | |
Senna coquimbensis
| (Vogel) Zoellner & C. San Martin | Anales Mus. Hist. Nat. Valparaiso 16: 26 | 1983 |
| Fabaceae | ! |
Senna corifolia
| (Benth.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 221 | 1982 |
| Fabaceae | ! |
Senna cornigera
| H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 199–200, f. 18 | 1982 |
| Fabaceae | |
Senna coronilloides
| (Benth.) Randell | J. Adelaide Bot. Gard. 12(2): 205 | 1989 |
| Fabaceae | ! |
Senna corymbosa
| (Lam.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 397 | 1982 |
| Fabaceae | |
Senna costata
| (J. F. Bailey & C. White) Randell | J. Adelaide Bot. Gard. 12(2): 206 | 1989 |
| Fabaceae | ! |
Senna covesii
| (A. Gray) H.S. Irwin & Barneby | Phytologia 44(7): 499 | 1979 |
| Fabaceae | ! |
Senna crassiramea
| (Benth.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 569 | 1982 |
| Fabaceae | ! |
Senna crotalarioides
| (Kunth) H.S. Irwin & Barneby | Phytologia 44(7): 499 | 1979 |
| Fabaceae | ! |
Senna cruckshanksii
| (Hook. & Arn.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 330 | 1982 |
| Fabaceae | ! |
Senna cuatrecasasii
| H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 164–166 | 1982 |
| Fabaceae | ! |
Senna cumingii
| (Hook. & Arn.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 312 | 1982 |
| Fabaceae | ! |
Senna cushina
| (J.F. Macbr.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 475 | 1982 |
| Fabaceae | ! |
Senna dardanoi
| Afr. Fern. & P. Bezerra | Bradea 4(8): 50, f. 1–2 | 1984 |
| Fabaceae | ! |
Senna dariensis
| (Britton & Rose) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 128 | 1982 |
| Fabaceae | |
Senna davidsonii
| V. Singh | J. Econ. Taxon. Bot. 16(3): 600 | 1992 |
| Fabaceae | ! |
Senna demissa
| (Rose) H.S. Irwin & Barneby | Phytologia 44(7): 499 | 1979 |
| Fabaceae | ! |
Senna didymobotrya
| (Fresen.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 467 | 1982 |
| Fabaceae | |
Senna dimidiata
| Roxb. | Fl. Ind. 2: 352 | 1832 |
| Fabaceae | ** |
Senna divaricata
| (Nees & Bl.) K. Larsen | Nordic J. Bot. 13(4): 404 | 1993 |
| Fabaceae | |
Senna divaricata
| (Nees & Bl.) Lock | Kew Bull. 43(2): 339 | 1988 |
| Fabaceae | ! |
Senna domingensis
| (Spreng.) H.S. Irwin & Barneby | Mem. New York Bot. Gard. 35: 96 | 1982 |
| Fabaceae | ! |
Senna durangensis
| (Rose) H.S. Irwin & Barneby | Phytologia 44(7): 499 | 1979 |