| Name | Erysiphe adunca var. ulmorum (Wallroth) Link |
| Authorship | (Wallroth) Link |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Erysiphe adunca (Wallroth) Fries: Fries |
| Citation | 1824 Sp. Pl., ed. 4 [Willd.]. 6(1): 112 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Erysiphe adunca var. ulmorum (Wallroth) Link |
| Identification made in | [no date] (2) |
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