Mountain Hemlock, also known by its scientific name Tsuga mertensiana, is a coniferous tree that is native to the western regions of North America. It is widely recognized for its beautiful evergreen foliage and its contribution to the ecosystem. Although the name "Mountain Hemlock" may be the most common reference to this tree species, it is also known by several other synonyms. Some of the synonyms for Mountain Hemlock include Black Hemlock, Alaska Hemlock, Mertens' Hemlock, and West Hemlock. Whether you call it by its common name or use one of its synonyms, the Mountain Hemlock is an important and beloved element of the North American landscape.