Prunus spinosa known as blackthorn is a deciduous shrub in the family Rosaceae. It has between 1 and 3 meters high. Its origin is in Europe and western Asia and is often found in areas of brambles Euro-Asia and North Africa. It only found in temperate and missing in areas of south-arctic climate. Part of thorny, fences and forest fringes, also appears in clear, banks, slopes, roadsides preferential limestone areas. It is found from sea level to 1900m latitude. The branches are alternate, divergent, with dark brown bark and shiny, with strong spines. The leaves are long with indented margins, make 3-4 cm long and 1-2 cm wide. Its shape is oval, oblanceolate or nearly elliptical, with obtuse or subacute appendix. It has small hairs in the back area. It blooms in late winter and early spring on the months between March and April. The flowers have a short pedicel and receptacle up to 3.5 mm, green and gabbro. The calyx consists of five sepals of up to 3 mm, erect patents, of roughly triangular shape with appendix acute or slightly obtuse. The corolla is composed of five white petals 4-8 mm, obovate, oblondos with entire margin. The androecium has numerous stamens. The gynoecium consists of an ovary locule gabbro super with bilobular. The fruit is a globose drupe 10-15 mm, subglobose to ovoid dark blue, pruinose, with greenish flesh. The wood is hard and dense, reddish brown, is used in the manufacture of walking sticks, tool handles and turnery. This species contains amygdalin and prunasin , substances which decompose in water to form hydrocyanic acid … …Toxic compound that is expectorant and improves digestion. The bark is antiasthmatic, antidiabetic and slightly antipyretic and anti-inflammatory. The fruits are very astringent, antidiarrheal, contain vitamin C and have a lots of tannins. Are used to make jams, jellies and preserves. In Navarre is used to make an alcoholic drink, a liqueur called “sloe gin”. The leaves are used to make tea. Before the fruit consumption, It frost and bakes because it loses this property (astringent), but many people eat it raw. The flowers have been used as a diuretic, purgative and laxative.