Rare species include sycamore, sassafras and pignut hickory. American Beech, White Ash, Shagbark Hickory, and Pignut Hickory are also present. Pignut hickory is difficult to reproduce from cuttings. The range of pignut hickory covers nearly all of the eastern United States (11). Pignut hickory is also found in Canada in southern Ontario. Pignut hickory (Carya glabra) are the dominant species. The scrub hickory intergrades with the pignut hickory ("Carya glabra") where ranges overlap.