The birch leaf is the foliage of the birch tree, belonging to the genus Betula. These leaves are typically oval or triangular in shape, with serrated edges and a pointed tip. They are bright green in spring and summer, turning yellow in the fall. Birch leaves play a crucial role in photosynthesis, helping the tree convert sunlight into energy. Birch trees are commonly found in temperate regions and are known for their distinctive white bark. The leaves are also important for local ecosystems, providing food and habitat for various species, including insects and birds.