Transcript QUERCUS ROBUR – HRAST LUŽNJAK

QUERCUS ROBUR
– HRAST LUŽNJAK –
-PEDUNCULATE OAK TREE –
-The
family: Fagaceae
Species : Quercus
AREAL
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It is native to most of Europe.
The best known pedunculate
oak forests in Croatia, are
situated in Slavonia and
Posavina and the valley
of the Sava and Drava.
HABITUS
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It is widespread at
elevations up to 250 m.
It grows up to 40m
with a trunk diameter
of up to 2,5 m.
It has a broad, irregular
crown.
It can live very long, up to
1000 years.
BARK
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Young oaks have
smooth bark.
Later it is pale
grey with deep
ridges.
ROOT
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At the beginning the trees are
focused on establishing a deep
sustaining root system.
As the oak grows, the tap root
spreads horizontally out from
the trunk.
It can have a significant root
spread.
SHOOTS
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It has some shoots
starting from the
base.
The catkins are the
first things that bud
out as the oak tree
leafs out.
BUDS
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Buds are brown
and oval.
LEAVES
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Oaks have spirally
arranged leaves,
with a lobed margin
in many species.
The leaves have
four to eight pairs
of lobes.
The oak is
deciduous but loses
its leaves very late
in the year.
FLOWERS
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The pedunculate oak
flowers between April
and May.
The flowers from an
oak tree are called
catkins. This is where
the acorns come from.
THE FRUIT
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The fruit is a nut called
an acorn, borne in a cuplike structure known as a
cupule.
It has a peduncle or stalk
between the parent twig
and the base of the acorn.
It has very short leaf stalks.
Did you know?
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Oak is mainly used to make furniture. Oak bark is
widely used in modern medicine in parodontosis,
stomatitis, bleeding
and the weakness of the gums, inflammation of the
mouth, throat, diseases.
A leaf tea can be used for external healing.
Acorn coffee has some therapeutic indications:
gastritis, anemia, tiredness, headaches, fatigue,
diarrhea, adjutant in internal bleeding.
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The largest forest complex of pedunculate oak Spačva
is situated in eastern part of Croatia in the river basin
Spačva and Studva. It occupies area of 38.789 ha, and
makes one fifth of all pedunculate oak forests in
Croatia.
Different species of wild animals live in Pedunculate
oak forests in our county, deer, does, wild boars,
rabbits, pheasants…
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The county coat of arms is in general the same as the
coat of arms of the Srijem county granted in 1748 by
Empress Maria Theresia.
The three white bars represent the three rivers of the
region - Danube, Sava and Bosut. The golden collar on
the deer is symbol of richness, and the Slavonian oak
tree is symbol of natural wealth of the region.
In the original coat of arms of 18th century in place of
the oak there was a cypress tree, while the river-bars
were made of wavy lines.
The coat of arms was crowned with a golden crown.
Literature : Image taken from http://zeljko-heimer-fame.from.hr/descr/index.html (with
permission)