Synonymy:
Microsphaera alphitoides Griffon & Maubl., Bull. Soc. Mycol. France 28(1): 103 (1912)

Erysiphe quercus Mérat, Rev. Fl. Paris (Paris): 459 (1843)
Phyllactinia quercus (Mérat) Homma, J. Fac. agric., Hokkaido Imp. Univ., Sapporo 38(3): 415 (1937)

Oidium quercinum Thüm., J. Sci. math. phys. nat. Lisboa, 1 Ser. 6(nos 21-24): 233 (1878)

Microsphaera alphitoides var. chenii U. Braun, Mycotaxon 15: 139 (1982)
Erysiphe alphitoides var. chenii (U. Braun) U. Braun & S. Takam., Schlechtendalia 4: 5 (2000)

Position in classification:
Erysiphe, Erysiphaceae, Helotiales, Leotiomycetidae, Leotiomycetes, Ascomycota, Fungi

Note:
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