| Name | Erysiphe alphitoides (Griffon & Maublanc) U. Braun & S. Takamatsu | 
| Authorship | (Griffon & Maublanc) U. Braun & S. Takamatsu | 
| Rank | Species | 
| Placed in | Erysiphe R. Hedwig ex de Candolle: Fries | 
| Citation | 2000 Schlechtendalia 4: 5 | 
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Erysiphe alphitoides (Griffon & Maublanc) U. Braun & S. Takamatsu | 
| Identification made in | [no date] (6), 2025 (2) |