| Name | Erysiphe extensa var. curta (U. Braun) U. Braun & S. Takamatsu |
| Authorship | (U. Braun) U. Braun & S. Takamatsu |
| Rank | Variety |
| Placed in | Erysiphe extensa (Cooke & Peck) U. Braun & S. Takamatsu |
| Citation | 2000 Schlechtendalia 4: 8 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Erysiphe extensa var. curta (U. Braun) U. Braun & S. Takamatsu |
| Identification made in | [no date] (2), 2024 (1) |