in taxon european filbert plant common hazel plant European hazelnut Corylus avellana L. PLANTS:COAV80 Corylus avellana, the common hazel, is a species of hazel native to Europe and western Asia. Common hazel is cultivated for its nuts. The name hazelnut applies to the nuts of any of the species of the genus *Corylus*. 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. [https://en.wikipedia.org/wiki/Corylus_avellana] cobnut corylus avellana Corylus avellana requires discussion