| Name | Erysiphe cichoracearum f. eupatorii Rehm |
| Authorship | Rehm |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Erysiphe cichoracearum de Candolle |
| Citation | 1911 Fasc. 48: no. 1950 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Erysiphe cichoracearum f. eupatorii Rehm |
| Identification made in | [no date] (1) |
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