Euphorbia anthonyi Brandegee, Erythea 7. 1899 sec. Martínez-Gordillo & al. 2002
- =Euphorbia clarionensis Brandegee, Erythea 7. 1899 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia anthonyi var. clarionensis (Brandegee) I.M. Johnst., Proc. Calif. Acad. Sci. 20(2). 1931 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce anthonyi (Brandegee) G.A. Levin in Mem. San Diego Soc. Nat. Hist. 16: 34. 1989 syn. sec. Martínez-Gordillo & al. 2006