| Name | Erysiphe lythri L. Junell |
| Authorship | L. Junell |
| Rank | Species |
| Placed in | Erysiphe R. Hedwig ex de Candolle: Fries |
| Citation | 1967 Svensk Bot. Tidskr. 61: 223 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Erysiphe lythri L. Junell |
| Identification made in | [no date] (2) |