Euphorbia macropus (Klotzsch & Garcke) Boiss., Prodr. (DC.). 15(2): 52. 1862 sec. Martínez-Gordillo & al. 2002
- ≡Anisophyllum macropus Klotzsch & Garcke in Abh. Königl. Akad. Wiss. Berlin 1859: 33. 1860 syn. sec. Martínez-Gordillo & al. 2006
- =Anisophyllum crassipes Klotzsch & Garcke in Abh. Königl. Akad. Wiss. Berlin 1859: 38. 1860 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia biformis S. Watson in Proc. Amer. Acad. Arts 18: 151. 1883 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia plummerae S. Watson in Proc. Amer. Acad. Arts 18: 195. 1883 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia tenera S. Watson, Proc. Amer. Acad. Arts 18. 150. 1883 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia retroscabra S. Watson in Proc. Amer. Acad. Arts 22: 449. 1887 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia chaculana Donn. Sm. in Bot. Gaz. 27(5): 441. 1899 syn. sec. Martínez-Gordillo & al. 2006
- =Zygophyllidium biforme (S. Watson) Arthur in Torreya 11: 260. 1912 syn. sec. Martínez-Gordillo & al. 2006