Native Americans used the peeling bark of the paper birch, Betula papyrifera, as a waterproof covering or even container (such as a drinking cup or ladle). This hardy tree forms beautiful stands of white-bark trees from the southeast United States, across to Alaska. It is absent from the southwest, but extends far north into Canada. The serrated edge leaves appear alternate on the branches — or in groups of 2 or 3. In the spring, the dangling male catkins are about 3 inches long, female about half that length. The tree produces winged fruits in late summer or early autumn.