Euphorbia fendleri Torr. & A. Gray, Report on the Botany of the Expedition 2(4). 1857 sec. Martínez-Gordillo & al. 2002
- =Anisophyllum fendleri (Torr. & A. Gray) Klotzsch & Garcke in Abh. Königl. Akad. Wiss. Berlin 1859: 26. 1860 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia greenei Millsp., Pittonia 2. 1890 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce fendleri (Torr. & A. Gray) Small, Fl. S.E. U.S. 1903 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce gooddingii Millsp., Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11). 1916 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce greenei (Millsp.) Rydb., Flora of the Rocky Mountains. 1917 syn. sec. Martínez-Gordillo & al. 2006