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Forest crops: Caucasian walnut

Forest crops: Caucasian walnut


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Classification, origin and diffusion

Division: Spermatophyta
Subdivision: Angiospermae
Class: Dicotyledones
Family: Juglandaceae

Majestic tree native to western Asia. It was introduced in Europe in the eighteenth century for forestry purposes, today it is an appreciated ornamental essence.

Caucasian walnut - Pterocarya fraxinifolia (Poir.) Spach (photo Jeroen Philippona)

Caucasian walnut - Pterocarya fraxinifolia (Poir.) Spach (photo E. Horak http://flora.nhm-wien.ac.at)

Caucasian Walnut trunk (photo Miguel Gómez de Aranda)

General characteristics

Size and bearing
It can reach 30 meters in height and has a foliage expanded horizontally and intense green.
Trunk and bark
In young specimens the rind is smooth and greyish; later it cracked longitudinally and became brownish.
leaves
The leaves are deciduous, alternate, imparipinnate with 11-21 lanceolate segments with serrated edge, long up to 30-50 cm.
Reproductive structures
Monoecious: male flowers are small and arranged in linear spikes up to 10 cm long; the female ones are gathered in greenish catkins up to 15 cm long; the latter are provided with a corolla which, after pollination, grows up to the point of wrapping the fruit (diclesio), which when ripe has two short leathery wings which facilitate its dispersal.

Uses

Its light and resistant wood is highly appreciated for the construction of furniture. In Europe it is highly appreciated as an ornamental plant and is widely used in parks.


Video: Sowing a Nut Forest (June 2022).


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