Prunus spinosa of the fruit caused by the fungus "Taphrina pruni" produces an elongated and flattened gall, devoid of a stone. The shrub, with its savage thorns, is traditionally used in Britain and other parts of northern Europe to make a "cattle-proof" hedge. The fruit is similar to a small damson or plum, suitable for preserves, but rather and for eating, unless it is picked after the first few days of autumn frost. This effect can be reproduced by freezing harvested sloes. The juice is used in the manufacture of fake port wine, and used as an to impart roughness to genuine
Prunus murrayana rare that no one has seen its fruit since first being scientifically described. Prunus murrayana Prunus murrayana, called the Murray’s plum, is a critically endangered shrub native to Texas. It is found in the Edwards Plateau and the trans-Pecos regions of the state. "Prunus murrayana" is a thorny, deciduous shrub up to 5 meters (almost 17 feet) tall, forming clumps by means of sprouts formed at the base of the plant. Leaves are hairy on both surfaces, usually folding along the midrib. Flowers are white, usually appearing about the same time as the leaves. Fruits are red with white dots,