Betula ermanii, also known as Erman's birch or Sakhalin birch, is a deciduous tree species that belongs to the family Betulaceae. It is native to northeastern Asia, particularly in Japan, Russia, and northern China.
The tree can grow up to 20-30 meters in height and has a straight trunk with a grayish-white bark that peels in thin layers. Its leaves are alternate, ovate, and about 5-10 cm in length with a pointed tip and serrated edges. In autumn, the leaves turn yellow before falling off.
Betula ermanii is a hardy tree that is tolerant of cold temperatures and can thrive in a wide range of soil types, including acidic, sandy, and clay soils. It prefers well-drained soils and grows best in full sun to partial shade.
The tree is commonly used for landscaping and as an ornamental tree in gardens and parks due to its attractive bark and foliage. It is also used in the production of furniture, plywood, and paper.
Betula ermanii is known for its medicinal properties, with the bark and leaves being used in traditional medicine to treat various ailments, including fever, cough, and skin diseases. It is also used as a source of food for animals such as deer, elk, and moose.