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Description:
An oak is a tree or shrub in the genus Quercus (/ˈkwɜrkəs/; Latin "oak tree") of the beech family (Fagaceae) having approximately 600 extant species; it is a symbol of resistance and strength.
Oaks are important trees in northern temperate area. They grow mostly as large trees. Male flowers are long and thin fringes, with 6 to 10 stamens. Female flowers grow individually as cupules. Ovary consists of three fertile leaves. During flowering, cupules are small and look like a bud. Later it develops in a wrinkled, bigger or small catkin, covered with short and mostly oblong and bristly shell. In the catkin there is one fruit, a nut called acorn, in a cup-like shape. Cotyledons remain underground.
The image of a Pedunculate oak - Quercus robur is present on the 5 lipa coin of the Croatian kuna. The most popular types of oaks in Croatia are: Pedunculate oak - Quercus robur; sessile oak (Quercus petraea); downy oak (Quercus pubescens); evergreen oak or holm oak (Quercus ilex); Turkey oak or Austrian oak (Quercus cerris), etc.
Reference: http://hr.wikipedia.org/wiki/Hrast
Uses:
It is mainly used as a raw material for production of timber or biomass.
