Senna Mill., Gard. Dict., abr. ed. 4 (1754) under Senna ; Irwin & Barneby in Polhill & Raven (eds.), Adv. Leg. Syst. 1 (1981) 105; Mem. N. Y. Bot. Gard. 35 (1982) 64; Watson & Dallwitz, Gen. Leg.-Caesalp. 17 (1983) 17, pro syn.; Hou, Larsen & Larsen, Fl. Malesiana 12 (1996) 673.
Cassia subgen. Senna Benth. in Mart., Fl. Bras. 15, 2 (1870) 96; Trans. Linn. Soc. Lond. 27 (1871) 513, 518; de Wit, Webbia 11 (1956) 228.
Type species (Irwin & Barneby 1982): Senna alexandrina Mill.