Euphorbia barnesii (Millsp.) Oudejans in Phytologia 67(1): 44. 1989 sec. Martínez-Gordillo & al. 2002
- ≡Adenopetalum barnesii Millsp. in Publ. Field Mus. Nat. Hist. Bot. Ser. 2(9): 377. 1913 syn. sec. Martínez-Gordillo & al. 2006
- =Euphorbia ocymoidea var. barnesii (Millsp.) McVaugh in Contr. Univ. Michigan Herb. 19: 228. 1993 syn. sec. Martínez-Gordillo & al. 2006