| Name | Oidium pyrinum Ellis & Everhart |
| Authorship | Ellis & Everhart |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Oidium |
| Citation | 1889 J. Mycol. 5(2): 68 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Oidium pyrinum Ellis & Everhart |
| Identification made in | [no date] (2) |
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