Aesculus glabra, commonly known as Ohio Buckeye, American Buckeye, or Fetid Buckeye, is a medium-sized deciduous tree that can grow up to 40 ft tall. Its leaves are palmately compound with five or rarely seven leaflets, and its flowers are produced in panicles in spring. The tree is native to the Midwestern and lower Great Plains regions of the United States, and is the state tree of Ohio. The name Buckeye was derived from its association with the pioneers on the Ohio frontier. The tree's nuts were used by Native Americans to extract tannic acid for making leather, and can also be dried and strung into necklaces. However, the foliage and fruits are poisonous to cattle and humans as they contain tannic acid. While not a major component of any North American forest cover type, Buckeye is a frequent tree in association with beech, sugar maple, and American basswood in the Wabash River Basin in southern Illinois and Indiana.
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