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Hazel, Filbert, Corylus avellanashrub of the family Corylaceae (Turkish Filbert), close to the family Betulaceae (Alder, Birch, Hornbeam)Etymology: "hazel" derives from Greek " corus ", helmet, because of the involucre which covers the fruit. The name "Hazel" appeared in the sixteenth century. The Latin name, Corylus avellana, recalls the hilly region of Aveline, in Italy, where abounds the hazel. |
hazelnut |
nut of the Hazel from Byzance |
Tortuous Hazel |
Uses: leaves, bark of the young stems and catkins contain active principles. The hazel is cultivated for its fruits (hazelnuts), notably in Italy, in the hilly region of Avellino (hence the Latin name, Corylus avellana). Hazelnuts with red film are used in pastry, those in white seed suit better in confectionery. Basketry is also made by pruning blades from branches. The crimson Hazel is a decorative shrub (as Prunus pissardi), because of the crimson colour of its leaves. It is smaller than Prunus pissardii. Feature: the hazel roots live in symbiosis with mushrooms (like the beech and the larch). Illness: hazelnuts have a small hole and are empty. Balanin of the hazelnut is an insect which pierces young hazelnuts to deposit eggs there. The larvas coming from this eggs feed on the almond then perforate the shell (hence the baby) to go out of it. They fall to the ground and bury themselves for winter. Only, at spring the larvae develop into adults. Chemical treatment is not really effective because it is necessary to pass the product when adult insects are in the hazel, which is not necessarily very obvious! To get rid of it, the best solution remains to scratch or to dig at hte foot of the tree so that the larvas buried in the soil comme to the surface and so exposed to cold (what is fatal to them) and to the predators. |
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