Erythrostemon palmeri (S. Watson) E. Gagnon & G.P. Lewis, PhytoKeys 71: 125. 2016 sec. Gagnon & al. 2016
- ≡Caesalpinia palmeri S. Watson, Proc. Amer. Acad. Arts 24: 47. 1889 syn. sec. Gagnon & G.P. Lewis 2016
- ≡Poinciana palmeri (S. Watson) Rose, Contr. U.S. Natl. Herb. 13(9): 303. 1911 syn. sec. Gagnon & G.P. Lewis 2016
- ≡Poincianella palmeri (S. Watson) Britton & Rose, N. Amer. Fl. 23(5): 332. 1930 syn. sec. Gagnon & G.P. Lewis 2016
- =Poincianella arida Britton & Rose, N. Amer. Fl. 23(5): 332. 1930 syn. sec. Gagnon & G.P. Lewis 2016
- =Caesalpinia arida (Britton & Rose) Wiggins, Contr. Dudley Herb. 3: 69. 1940 syn. sec. Gagnon & G.P. Lewis 2016