Euphorbia lata Engelm., Rep. U.S. Mex. Bound., Bot. 2(1). 1858 sec. Martínez-Gordillo & al. 2002
- =Euphorbia dilatata Torr. & A. Gray, Report on the Botany of the Expedition 2(4). 1857 syn. sec. Martínez-Gordillo & al. 2006
- =Alectoroctonum dilatatum Klotzsch & Garcke, Abh. Königl. Akad. Wiss. Berlin 1859. 1860 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce lata (Engelm.) Small, Fl. S.E. U.S. 1903 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia rinconis M.E. Jones, Contr. W. Bot. 12. 1908 syn. sec. Martínez-Gordillo & al. 2006