- Caused by Taphrina bullata, which forms swollen areas on 1, Leaf showing diseased areas.
- Exoascaceae are a small group of doubtful extent here used to include Exoascus, Taphrina, Ascorticium and Endomyces.
- The Taphrineae, which include Exoascus and Taphrina, are important parasites - e.g.
- - Taphrina Pruni.
- Exoascaceae: Giesenhagen, "Taphrina, Exoascus, Magnusiella" (complete literature given), Bot.