The Tsuga Canadensis is commonly known as the Canada Hemlock, Eastern Hemlock as well as Hemlock Spruce.
The currently accepted scientific name for eastern hemlock is Tsuga canadensis (L.) Carr. . Fernald recognizes a dwarf form, T. canadensis forma parvula Vict. and Rousseau, that grows in mats up to 3 feet (1 m) high in Quebec and New England.In the United States, eastern hemlock occurs throughout New England, the mid-Atlantic states, and the Lake States, and extends south in the Appalachian Mountains to northern Georgia and Alabama and west from the mountains into Indiana, western Ohio, and western Kentucky. At its northern limit, eastern hemlock ranges along the southern border of Canada from southern Ontario to Cape Breton Island, Nova Scotia .Eastern hemlock occurs as a dominant or codominant in coniferous and mixed-hardwood forests. It is often the only conifer present in mixed mesophytic forests of the eastern United States . Publications listing eastern hemlock as codominant or dominant are as follows: The natural forests of Maryland: an explanation of the vegetation map of Maryland A multivariate analysis of forest communities in the western Great Smoky Mountains National Park The vegetation of Wisconsin The principal plant associations of the Saint Lawrence Valley Field guide: forest habitat types of northern Wisconsin A classification of the deciduous forest of eastern North America The natural communities of South Carolina Forest associations in the Harvard Forest Vegetation of the Great Smoky Mountains Some of the information provided here is attributed to:Carey, Jennifer H. 1993. Tsuga canadensis. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). , available at the USDA Fire Effects Information System (FEIS) website