| Name | Erysiphe magnicellulata U. Braun |
| Authorship | U. Braun |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Erysiphe R. Hedwig ex de Candolle: Fries |
| Citation | 1978 ["1977"] Feddes Repert. Spec. Nov. Regni Veg. 88(9-10): 656 |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Erysiphe magnicellulata U. Braun |
| Identification made in | [no date] (4), 1984 (1), 1985 (5) |