Silver birch

Betula pendula, the silver birch, is a species of tree in the family Betulaceae It is native to Europe, Morocco, temperate Asia, Canada, and Alaska, although in southern Europe and Morocco it is only found at higher elevations. Its range extends into Siberia, China, and southwest Asia in the mountains of northern Turkey, the Caucasus, and northern Iran. It has also been called warty birch from the warty twigs, and (particularly for selected strongly pendulous cultivars) weeping birch; in Korea it has been cited as East Asian white birch, though this can also refer to Betula platyphylla. It has been introduced into North America, where it is sometimes known as European white birch, and is considered invasive in some states in the United States and parts of Canada.

Description from Wikipedia — Betula pendula (CC BY-SA), shortened and unedited in substance.