Beetalaskoksia

Beetalaskoksia, also known as *Betula pendula* subsp. *czerepanovii* or the **Siberian white birch**, is a deciduous tree species belonging to the Betulaceae family. It is a variant of the common silver birch (*Betula pendula*) and is primarily found in the taiga regions of Siberia, Russia, and parts of northern Mongolia. This subspecies is characterized by its slender, white-barked trunks, which are often covered in dark, horizontal lenticels. The bark remains smooth and silvery even as the tree matures, distinguishing it from other birch species that develop rougher bark over time.

Beetalaskoksia typically grows to a height of 15–25 meters, though it can reach up to 30 meters in optimal conditions. Its leaves are triangular to ovate, with serrated edges and a light green color that turns yellow in autumn. The tree produces small, catkin-like flowers in spring, followed by winged seeds that aid in wind dispersal. It thrives in cold, temperate climates and is well-adapted to poor, acidic soils, making it a common component of boreal forests.

Ecologically, beetalaskoksia plays a role in stabilizing soil and providing habitat for various wildlife species, including birds and small mammals. Its wood is lightweight and often used for construction, firewood, and traditional crafts. Due to its cold-hardiness and resilience, it is occasionally cultivated in gardens and parks outside its native range, particularly in regions with similar climatic conditions. However, it is not as widely planted as other birch varieties, such as the common silver birch. Conservation efforts focus on protecting its natural habitats, as deforestation and climate change pose potential threats to its populations.