Basionym:
Microsphaera alphitoides Griffon & Maubl., Bull. Trimestriel Soc. Mycol. France 28: 103 (1912) [MB#121909]
Obligate synonym: Microsphaera alphitoides var. alphitoides (1912) [MB#417371]
Taxonomic synonyms:
- Microsphaera penicillata f. fagi Jacz., Karmannyi opredelitel' gribov. II. Muchnisto-rosjanye griby: 355 (1927) [MB#273872]
- Microsphaera penicillata f. aesculi P.D. Marchenko, Ukraïns'kii Botanichnii Zhurnal: 275 (1976) [MB#352954]
- Oidium alphitoides Griffon & Maubl., Bull. Soc. Mycol. France: 137 (1910) [MB#438757]
- Microsphaera dentatae Liou (1931) [MB#481720]
- Microsphaera alni var. dentatae (Liou) F.L. Tai, Bulletin of the Chinese Botanical Society 1: 22 (1935) [MB#250607]
- Microsphaera alni f. quercus-glanduliferae Hara, Dainippon Sanrin Kwacho (J. Forest. Assoc. Japan): 64 (1915) [MB#504136]
- Microsphaera quercus Sawada, Bulletin of the Government Forest Experimental Station Meguro 50: 122 (1951) [MB#538530]
- Microsphaera querci Sawada (1951) [MB#301170]