Euphorbia magdalenae Benth., Bot. Voy. Sulph. 1844 sec. Martínez-Gordillo & al. 2002
- =Euphorbia blepharostipula Millsp., Contr. U.S. Natl. Herb. 1. 1890 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia watsonii Millsp., Zoe 1. 1891 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce magdalenae (Benth.) Millsp., Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11). 1916 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce watsonii (Millsp.) Millsp., Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11). 1916 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia espirituensis M.E. Jones, Contr. W. Bot. 18. 1933 syn. sec. Martínez-Gordillo & al. 2006