The Blackthorn reference article from the English Wikipedia on 24-Jul-2004
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Blackthorn

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Blackthorn

Blackthorn (Prunus spinosa)
Scientific classification
Kingdom : Plantae
Division : Magnoliophyta
Class : Magnoliopsida
Order : Rosales
Family : Rosaceae
Subfamily : Prunoideae
Genus : Prunus
Species : spinosa
Binomial name
Prunus spinosa L.

The Blackthorn, is a large shrub or a small tree of the genus Prunus, botanically Prunus spinosa. Its fruit is called the sloe.

The blackthorn is native to Europe, western Asia, and north Africa. The common name is derived from its dark bark and skin, and from the thorns or spines that it bears.

Blackthorn (flowers)Enlarge

Blackthorn (flowers)

It is covered in white flowers in early spring, and is often the first flowering tree in the countryside in its native regions. It bears a fruit called the sloe, which is similar to a small damson or plum, suitable for preserves, but too sharp to eat; in rural England so-called sloe gin is made from them, though this is not a true gin but a liqueur.

The blackthorn is extensively planted for hedging and for cover for game birds. Some forms are grown for ornament and flower.