Euphorbia geyeri Engelm. var. geyeri, Boston J. Nat. Hist. 5(2). 1845 sec. Martínez-Gordillo & al. 2002
- =Anisophyllum geyeri (Engelm.) Klotzsch & Garcke in Abh. Königl. Akad. Wiss. Berlin 1859: 23. 1860 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia polyclada Boiss., Cent. Euphorb. 1860 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce geyeri (Engelm.) Small, Fl. S.E. U.S. 1903 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce polyclada (Boiss.) Small, Fl. S.E. U.S. 1903 syn. sec. Martínez-Gordillo & al. 2006