| Name | Erysiphe aggregata (Peck) Farlow |
| Authorship | (Peck) Farlow |
| Rank | Species |
| Placed in | Erysiphe R. Hedwig ex de Candolle: Fries |
| Citation | 1878 Bull. Bussey Inst. 2: 227 |
| Holdings | 30 Specimens held in the Harvard University Herbaria identified as Erysiphe aggregata (Peck) Farlow |
| Identification made in | [no date] (28), 1984 (1), 1986 (1) |
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