Taphrina pruni Taphrina pruni Taphrina pruni is a fungal plant pathogen of blackthorn (Prunus spinosa) that causes the Pocket or bladder Plum gall, a chemically induced distortion of the fruit (sloes), producing swollen on one side, otherwise deformed and flattened fruit gall without a stone. The twigs on infected plants may also be deformed with small strap-shaped leaves. "T. pruni" produces a distinctive tongue-like growth, similar to other closely related species such as "Taphrina alni" on Alder ("Alnus glutinosa") and "Taphrina padi" on Bird Cherry "Prunus padus". The growth is the distorted fruit and not a fungus in its entirety. "T. pruni"
Prunus × incam Prunus × incam Prunus × incam, sometimes called the Okamé cherry, although that name rightly belongs to its Okamé cultivar, is a hybrid species of flowering cherry, the result of a cross between "Prunus incisa" (Fuji cherry) and "Prunus campanulata" (Taiwan or bellflower cherry). It is a small tree, reaching 8m, with silver bark and showy pink flowers. Its leaves are obovate or oblanceolate, 47 to 70mm long and 22 to 31mm wide. Its fall foliage is an attractive bronze-orangish-red. Due to its hybrid nature, fruit are rarely produced even though it produces large amounts of pollen, and so it