Basionym Name:Ostropa cinerea var. euphorbiae Duby, Mém. Soc. Phys. Hist. nat. Genève 16(1): 50 (1861)
Homotypic synonyms:Hysterium euphorbiae (Duby) Mussat, in Saccardo, Syll. fung. (Abellini) 15: 178 (1901)