Euphorbia anychioides Boiss., Cent. Euphorb.: 12. 1860 sec. Martínez-Gordillo & al. 2002
- =Euphorbia pilosula Engelm. ex Boiss., Prodr. (DC.). 15(2). 1862 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia ramosa Seaton, Proc. Amer. Acad. Arts 28. 1893 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia ramosa var. villosior Greenm., Proc. Amer. Acad. Arts 32. 1897 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia rubida Greenm., Proc. Amer. Acad. Arts 39(5). 1903 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia chalicophila Weath., Proc. Amer. Acad. Arts 45. 1910 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce pilosula (Engelm. ex Boiss.) Arthur, Torreya 11. 1912 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce rubida (Greenm.) Millsp., Publ. Field Mus. Nat. Hist. Bot. Ser. 11(10). 1914 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce anychioides (Boiss.) Millsp. in Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11): 408. 1916 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce chalicophila (Weath.) Millsp., Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11). 1916 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce ramosa (Seaton) Millsp., Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11). 1916 syn. sec. Martínez-Gordillo & al. 2006
- =Chamaesyce villosior (Greenm.) Millsp., Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11). 1916 syn. sec. Martínez-Gordillo & al. 2006