Silver birch is a medium-sized deciduous tree, reaching 25 m tall , with a slender trunk and arched branches with drooping branchlets.
The bark is white, often with dark marks or patches, especially near the base.
The shoots are rough with small warts and the leaves are up to 7 cm long, triangular with a broad base and pointed tip, with double-toothed serrated margins.
The flowers are wind-pollinated catkins, which the plant produces before the leaves in early spring, the tiny winged seeds are air borne and ripening during late summer on pendulous, cylindrical catkins abuot 4 cm long and 7 mm wide
It often grows with a mycorrhizal fungus Amanita muscaria (fly agaric) in a symbiotic relationship.
hope this is of some help