Prunus spinosa (blackthorn or sloe) is a species of Prunus native to Europe, western Asia, and locally in northwest Africa.
Prunus spinosa is a deciduous large shrub or small tree growing to 5 m tall, with blackish bark and dense, stiff, spiny branches. The leaves are oval, 2–4.5 cm long and 1.2–2 cm broad, with a serrated margin. The flowers are 1.5 cm diameter, with five slightly creamy-white petals; they are produced shortly before the leaves in early spring, and are hermaphroditic and insect-pollinated.
Description from Wikipedia: http://en.wikipedia.org/wiki/Blackthorn
+0.3 exposure compensation in ACR