Silver birch

The silver birch ("Betula pendula"), also known as the warty birch, European white birch, or East Asian white birch, is a deciduous tree in the family Betulaceae. It grows in Europe, parts of Asia and North America.
The silver birch is a medium-sized tree, which has triangle-shaped leaves. In autumn the leaves turn yellow and fall. Trunk is shining white. The twigs are slender, and in an old tree the they often hang downwards. The flowers are grouped in an inflorescence called a catkin. The wind spreads the birch seed. The trees are monoecious, with both male and female catkins on the same tree.