Euphorbia spathulata Lam.
Euphorbia spathulata, Encycl. 2. 1788 sec. Martínez-Gordillo & al. 2002
- =Euphorbia obtusata, Fl. Amer. Sept. 2: 606–607. 1813 ["1814"] syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia dictyosperma, Index Sem. (St. Petersburg) 2: 37. 1836 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia dictyosperma var. leiococca, Rep. U.S. Mex. Bound., Bot. 2(1). 1859 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia dictyosperma var. mexicana, Rep. U.S. Mex. Bound., Bot. 2(1). 1859 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia multicaulis, Rep. U.S. Mex. Bound., Bot. 2(1). 1859 syn. sec. Martínez-Gordillo & al. 2006
- =Tithymalus arkansanus, Abh. Königl. Akad. Wiss. Berlin 1859. 1860 syn. sec. Martínez-Gordillo & al. 2006
- =Tithymalus obtusatus, Abh. Königl. Akad. Wiss. Berlin 1859. 1860 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia dictyosperma var. multicaulis, Contr. U.S. Natl. Herb. 2. 1894 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia leiococca, Report (Annual) of the Missouri Botanical Garden. 11. 1900 syn. sec. Martínez-Gordillo & al. 2006