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Systematics of woody plants
Gymnosperms
Angiosperms
Alphabetical list of trees
Gymnosperms
Angiosperms
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Species:
Juglans regia L.
(Juglans regia L.)
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Genus:
Juglans
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Family:
Juglandaceae
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Group:
Angiosperms
Habitus
the tree is 20 – 30 m high
the crown is low-set of irregular shape
the bark is light grey
the bork network is cracked, grey, yellowish in the cracks
Buds
the buds are arranged in a spiral, broadly egg-shaped to hemispherical, 4 - 6 x 3 - 4 mm in size, with the terminal bud being the largest
the protective scales are greenish-brown to grey, with a fine woolly texture
Shoots
they are relatively thick, greenish-brown
elongated lenticels, whitish
the leaf trace is large, three-lobed with traces of vascular bundles
large, segmented stem with membranous partitions
Leaves (assimilation organs)
composed leaves - odd-pinnate composed, 20 – 40 cm large
they are composed of 2 – 4 pairs of leaves
the lower pair of leaves is the smallest
individual leaves are elongated elliptical, with a pointed tip, entire margin, short stalked
the leaves are aromatic (when crushed)
Flowers
it is a monoecious woody plant, flowers are unisexual
it blooms in May simultaneously with the unfolding of leaves
male (♂) flowers are in drooping catkins, 6 - 10 cm long on last year's twigs
female (♀) flowers are 2 - 3 at the end of this year's shoots
Fruits – seeds
the fruit is ellipsoid to spherical husk, 4 - 7 x 3 - 5 cm in size
the outer pericarp (exocarp) is green, fleshy, smooth, and splits and falls apart while still on the tree (or after falling)
the nuts are variable in shape and size, light brown, and shallowly furrowed
it ripens in September – October
Extension
the original natural range can no longer be determined due to its long history of cultivation
Central Asia is considered the original area of distribution
Ecology
a heat-loving and light-loving tree species
it requires high nutrient content in the soil
it is sensitive to frost !
Significance
it is a fruit-bearing tree species
it provides very high-quality and valued wood, which is used, for example, for:
furniture production
production of veneers
manufacturing of gunstocks (the wood from the base along with the wood from the trunk to the roots - root wood)
From history
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