"Corylus avellana, the common hazel, is a species of hazel native to Europe and western Asia, from the British Isles south to Iberia, Italy, Greece, Turkey ...
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and Cyprus, north to central Scandinavia, and east to the central Ural Mountains, the Caucasus, and northwestern Iran. It is an important component of the hedgerows that were the traditional field boundaries in lowland England. The wood was traditionally grown as coppice, the poles cut being used for wattle-and-daub building and agricultural fencing.
Common hazel is cultivated for its nuts. The name hazelnut applies to the nuts of any of the species of the genus Corylus, but in commercial settings a hazelnut is usually that of C. avellana. This hazelnut or cob nut, the kernel of the seed, is edible and used raw or roasted, or ground into a paste. The cob is round, compared with the longer filbert nut." - (en.wikipedia.org 19.08.2021)
