Elm bark, or ulmus campestris, is a tree native to the central and eastern United States and Ontario, Canada. The tree is known for its dark brown to reddish brown bark. Native Americans would peel its slimy, red inner bark from twigs and branches and use it as a remedy for many common ailments. They found that when the bark is mixed with water, it generates a sticky material known as mucilage. The Native Americans would also wrap the inner bark of the slippery elm around their meat to keep the meat from going bad.
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