Zygia conzattii (Standl.) Britton & Rose, N. Amer. Fl. 23(1): 40. 1928 sec. Barneby & Grimes 1997
- ≡Calliandra conzattii Standl., Contr. U.S. Natl. Herb. 20(6): 188. 1919 syn. sec. Barneby & Grimes 1997
- ≡Pithecellobium conzattii (Standl.) Standl., Publ. Field Mus. Nat. Hist., Bot. Ser. 4: 212. 1929 syn. sec. Sousa & al. 2003