| Name | Erysiphe communis var. urticacearum (Rabenhorst) Westendorp | 
| Authorship | (Rabenhorst) Westendorp | 
| Rank | Variety | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Erysiphe communis (Wallroth) Schlechtendal: Fries | 
| Citation | 1854 Bull. Acad. Roy. Sci. Belgique 21(2): 231 | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Erysiphe communis var. urticacearum (Rabenhorst) Westendorp | 
| Identification made in | [no date] (1) |