Platanus Occidentalis, or American Sycamore, is a large deciduous tree that grows in North America. This tree has several synonyms, including Buttonwood, Buttonball, and American Plane. Buttonwood is a popular name for this tree, used mostly in the eastern United States, while Buttonball refers to the dense, rounded ball-like clusters of small flowers that grow on the tree in the spring. American Plane is another synonym used to describe the tree's bark, which peels off in distinctive "plates" and can be smooth or rough to the touch. Regardless of its name, Platanus Occidentalis is a majestic tree with a unique presence in the American landscape.