| Name | Erysiphe knautiae Duby |
| Authorship | Duby |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Erysiphe R. Hedwig ex de Candolle: Fries |
| Citation | 1830 Bot. Gall. 2: 870 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Erysiphe knautiae Duby |
| Identification made in | [no date] (1), 1985 (1) |
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