Synonymy
Euphorbia seguieriana subsp. niciciana (Borbás ex Novák) Rech. f. in Ann. Naturhist. Mus. Wien 56: 212. 1948
- ≡Euphorbia niciciana Borbás ex Novák in Term. Füz. 14: 53. 1893
- ≡Tithymalus seguierianus subsp. nicicianus (Borbás ex Novák) Chrtek & Křísa in Biologia (Bratislava) 26: 769. 1971
- ≡Tithymalus nicicianus (Borbás ex Novák) Soják in Cas. Nár. Mus., Odd. Prír. 140: 176. 1972
- ≡Euphorbia seguieriana var. niciciana (Borbás ex Novák) Geltman in Novosti Sist. Vyssh. Rast. 37: 138. 2005
- =Euphorbia esuloides Velen. ex Nyman, Consp. Fl. Eur., Suppl. 2: 276. 1886, nom. illeg.
- =Euphorbia reflexa Formánek in Verh. Naturf. Vereins Brünn 33: 22. 1895 ["1894"], nom. illeg.
- =Euphorbia rumelica Formánek in Verh. Naturf. Vereins Brünn 38: 186. 1900