Synonymy:
Oidium hortensiae Jørst. ex S. Blumer, Z. PflKrankh. PflSchutz 38: 78 (1928)
Pseudoidium hortensiae (Jørst. ex S. Blumer) U. Braun & R.T.A. Cook, Taxonomic Manual of the Erysiphales (Powdery Mildews): 606 (2012)

Erysiphe communis f. sedi Jacz., Karm. Opred. Grib., Vip. 2. Muchn.-rosj. griby (Leningrad): 238 (1927)

Oidium kalanchoes Lüstner [as 'kalanchoës'], Nachrichtenblatt des Deutschen Pflanzenschutzdienstes 15(4): 41 (1935)

Erysiphe sedi R.Y. Zheng & G.Q. Chen, Sydowia 34: 253 (1981)

Erysiphe sedi U. Braun, Feddes Repert. Spec. Nov. Regni Veg. 92(7-8): 502 (1981)

Erysiphe malloti Zhi X. Chen & R.X. Gao, in Chen, Gao, Luo & Liu, Acta Mycol. Sin. 3(2): 75 (1984)

Erysiphe malloti Y. Nomura & Tanda, Trans. Mycol. Soc. Japan 26(2): 115 (1985)

Oidium kalanchoes Lüstner ex U. Braun [as 'kalanchoës'], Beih. Nova Hedwigia 89: 602 (1987)
Pseudoidium kalanchoes (Lüstner ex U. Braun) U. Braun & R.T.A. Cook [as 'kalanchoës'], Taxonomic Manual of the Erysiphales (Powdery Mildews): 608 (2012)

Oidium sesami H.D. Shin, Korean Jl Pl. Path. 6(1): 9 (1990)

Oidium neolycopersici L. Kiss, in Kiss, Cook, Saenz, Cunnington, Takamatsu, Pascoe, Bardin, Nicot, Sato & Rossman, Mycol. Res. 105(6): 695 (2001)
Pseudoidium neolycopersici (L. Kiss) L. Kiss, Taxonomic Manual of the Erysiphales (Powdery Mildews): 612 (2012)
Erysiphe neolycopersici (L. Kiss) H.Y. Hsiao & Y.M. Shen, in Hsiao, Ariyawansa, Hsu, Wang & Shen, Diversity 14(3, no. 204): 14 (2022)

Oidium pedaliacearum H.D. Shin, Schlechtendalia 17: 45 (2008)
Pseudoidium pedaliacearum (H.D. Shin) H.D. Shin, Taxonomic Manual of the Erysiphales (Powdery Mildews): 615 (2012)
Erysiphe pedaliacearum (H.D. Shin) H.D. Shin, in Shin, Meeboon, Takamatsu, Adhikari & Braun, Mycol. Progr. 18(1-2): 239 (2019)

Erysiphe caricae-papayae Meeboon & S. Takam., in Braun, Meeboon, Takamatsu, Blomquist, Fernández Pavía, Rooney-Latham & Macedo, Mycosphere 8(9): 1408 (2017)

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

Note:
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