| Name | Erysiphe convolvuli var. calystegiae U. Braun |
| Authorship | U. Braun |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Erysiphe convolvuli de Candolle |
| Citation | 1981 Nova Hedwigia 34(3 & 4): 691 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Erysiphe convolvuli var. calystegiae U. Braun |
| Identification made in | 1985 (2) |