Euphorbia pediculifera Engelm. var. pediculifera, Rep. U.S. Mex. Bound., Bot. 2(1). 1858 sec. Martínez-Gordillo & al. 2002
- =Euphorbia conjuncta Millsp., Proc. Calif. Acad. Sci. 2. 1889 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia involuta Millsp., Proc. Calif. Acad. Sci. 2. 1889 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia pediculifera var. inornata Brandegee, Zoe 5: 1905 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce pediculifera (Engelm.) Rose & Standl., Contr. U.S. Natl. Herb. 16(1). 1912 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce conjuncta (Millsp.) Millsp. in Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11): 408. 1916 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce involuta (Millsp.) Millsp., Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11). 1916 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia pediculifera var. involuta (Millsp.) I.M. Johnst., Proc. Calif. Acad. Sci. 12(30). 1924 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia vermiformis M.E. Jones, Contr. W. Bot. 16. 1930 syn. sec. Martínez-Gordillo & al. 2006