| Name | Oidium quercinum var. gemmiparum Ferraris |
| Authorship | Ferraris |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Oidium quercinum Thümen |
| Citation | 1909 Ann. Mycol. 7(1): 69 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Oidium quercinum var. gemmiparum Ferraris |
| Identification made in | [no date] (1) |
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