It is located between the northern tundra and the southern temperate mixed forests or steppe. In Europe and Asia, the boreal forest is also referred to as the Taiga. Winters are long and cold in the boreal forest, lasting from 6 to 9 months. The cambium is an area of non-specialized cells that can develop into any type of tissue. It produces new tissue as parallel layers of cells that increase the diameter of the tree.
Catkins are compact, drooping clusters of tiny flowers.
They are usually either male or female. When there are only flowers of one sex, the males are usually a bit larger. Catkins are most obvious in willows and their relatives and are recognized as drooping and caterpillar-shaped. For example, an oak-hickory forest might be dominated by both oak and hickory. Typically, communities are specific collections of organisms that interact with one another and the environment and are recognized in other locations in the world.