| Name | Erysiphe orontii Castagne |
| Authorship | Castagne |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Erysiphe R. Hedwig ex de Candolle: Fries |
| Citation | 1851 Cat. Pl. Marseille Supplément: 52 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Erysiphe orontii Castagne |
| Identification made in | 1985 (1) |
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