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Balsam Fir(Abies balsamea)
The balsam fir is found in forests in the northern half of Wisconsin, usually growing with white spruce in cool, moist, or shaded places. Balsam fir trees are medium sized, standing about 40-60 feet with a trunk diameter of 1-2 feet. Look for bark that is thin, smooth and grayish, marked by blisters filled with resin or balsam pitch. The "leaves" are needle-like and flat, this is one sign it's a fir. The needle-leaves are dark green on top and have silvery white bands underneath. Leaves measure ½ to 1 inch with rounded points and are twisted, arranged in what looks like two rows.
Balsams are used by people for many products, especially holiday trees. They are also used for pulp to make paper products. The resins from the pitch blisters on the bark is called "Canada Balsam" and is used as a clear cement for glass in optical instruments and microscope slides. |