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 virginiana the chokecherry the official fruit of the state of North Dakota, in part because its remains have been found at more archeological sites in the Dakotas than anywhere else. Chokecherry is also used to craft wine in the western United States mainly in the Dakotas and Utah as well as in Manitoba, Canada. Prunus virginiana Prunus virginiana, commonly called bitter-berry, chokecherry, Virginia bird cherry and western chokecherry (also black chokecherry for "P. virginiana" var. "demissa"), is a species of bird cherry ("Prunus" subgenus "Padus") native to North America; the natural historic range of "P. virginiana" includes most of Canada (including