The American Elm tree grows to be around 100 feet tall. Its bark is flaky and grayish brown when mature. The leaves are serrated and ovate. The tree produces samaras: dry single seeded, winged, wafer-like fruits. The tree is found in the Eastern and Midwest parts of the US. It has been greatly depleted by Dutch Elm Disease, a fungus infection that clogs the tree's vascular system.