| Name | Erysiphe tortilis (Wallroth) Link | 
| Authorship | (Wallroth) Link | 
| Rank | Species | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Erysiphe R. Hedwig ex de Candolle: Fries | 
| Citation | 1824 Sp. Pl., ed. 4 [Willd.]. 6(1): 111 | 
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Erysiphe tortilis (Wallroth) Link | 
| Identification made in | [no date] (2) |