| Name | Erysiphe ulmi Castagne |
| Authorship | Castagne |
| Rank | Species |
| Placed in | Erysiphe R. Hedwig ex de Candolle: Fries |
| Citation | 1845 Cat. Pl. Marseille 192 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Erysiphe ulmi Castagne |
| Identification made in | [no date] (1) |
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