The tree species Aesculus glabra is commonly known as Ohio buckeye, American buckeye, or fetid buckeye.
It is native primarily to the Midwestern and lower Great Plains regions of the United States, extending southeast into the Nashville Basin. It is also found locally in the extreme southwest of Ontario, on Walpole Island in Lake St. Clair, and in isolated populations in the South. It is a medium-sized deciduous tree growing to 15 to 25 metres (49 to 82 ft) tall.
The leaves are palmately compound with five (rarely seven) leaflets, 8–16 cm (3.1–6.3 in) long and broad. The flowers are produced in panicles in spring, yellow to yellow-green, each flower 2–3 cm (0.79–1.2 in) long with the stamens longer than the petals (unlike the related Yellow Buckeye, where the stamens are shorter than the petals). The fruit is a round or oblong spiny capsule 4–5 cm (1.6–2.0 in) diameter, containing 1 to 3 nut-like seeds, 2–3 cm (0.79–1.2 in) in diameter, brown with a whitish basal scar.
Symbolism and uses 
The Ohio buckeye is the state tree of Ohio, and its name is an original term of endearment for the pioneers on the Ohio frontier, with specific association with William Henry Harrison. Capt. Daniel Davis of the Ohio Company of Associates, under Gen. Rufus Putnam, traversed the wilderness in the spring of 1788, and began the settlement of Ohio. Davis was said to be the second man ashore at Point Harmar, 7 April 1788, and he declared later that he cut the first tree felled by a settler west of the Ohio River, a "buckeye" tree. Additionally, Colonel Ebenezer Sproat, another founder of that same pioneer city of Marietta, had a tall and commanding presence; he greatly impressed the local Indians, who in admiration dubbed him "Hetuck", meaning eye of the buck deer, or Big Buckeye. Subsequently, the word came to be used as the nickname and colloquial term for people from the state of Ohio and The Ohio State University's sports teams. The Ohio State University adopted "Buckeyes" officially as its nickname in 1950, and it came to be applied to any student or graduate of the university.
The buckeye candy, made to resemble the tree's nut, is made by dipping a ball of peanut butter fudge in milk chocolate, leaving a circle of the peanut butter exposed. These are a popular treat in Ohio, especially during the Christmas and NCAA college football seasons.
- "Aesculus glabra Range Map". United States Geological Survey. Retrieved 2008-03-10.
- "Canadian Poisonous Plants Information System: Notes on poisoning: Aesculus glabra". Digir.agr.gc.ca. 2009-09-01. Retrieved 2012-02-12.
- Davis, George L. (1884) Samual Davis of Oxford MA and Joseph Davis of Dudley MA and their Descendants Press of Charles Hamilton, Worcestor, MA
- Hildreth, S. P. (1852) Early Pioneer Settlers of Ohio, H. W. Derby and Co., Cincinnati, Ohio , p. 237.
- Ohio Division of Forestry, Ohio…The Buckeye State, Ohio Department of Natural Resources brochure (rev 11/1998).
- Walsh, Christopher (2009). Ohio State Football Football Huddleup, Triumph Books (Random House, Inc.), ISBN 978-1-60078-186-5, p. 120.
- "Ohio Department of Natural Resources - camping, boating, fishing, hunting, biking, hiking in Ohio". Dnr.state.oh.us. Retrieved 2012-02-12.
Further reading 
- Darbyshire, S. J., & Oldham, M. J. (1985). Ohio buckeye, Aesculus glabra, on Walpole Island, Lambton County, Ontario. Canad. Field-Nat. 99: 370-372.
- Farrar, J.R. (1995). Ohio Buckeye. Trees in Canada. Fitzhenry & Whiteside Ltd. (Markham, Ontario) and the Canadian Forest Service (Ottawa). pg. 157. are the size of colemans nuts
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