Basionym Name:Erysiphe gigantiasca Thüm. & Sorokīn, in Thümen, Mycoth. Univ., cent. 7: no. 645 (1877)
Homotypic synonyms:Sphaerotheca gigantiasca (Thüm. & Sorokīn) Bäumler, Hedwigia 30: 261 (1891)