The Ohio buckeye, Aesculus glabra, typically grows 20 to 40 feet tall and 20 to 40 feet wide in mesic woods and bottomlands. Hummingbirds are attracted to its flowers, and some wildlife species eat its seeds, though the raw seeds are poisonous to humans and most domestic livestock. Historically, its light, soft wood was used for pulpwood, woodenware, and the production of artificial limbs. Native Americans called the nut hetuck, meaning "buck eye," because markings on the nut resemble the eye of a deer. Ohioans were called "Buckeyes" during the presidential election of 1840 when William Henry Harrison's supporters wore buckeye necklaces and carved campaign souvenirs out of buckeye wood to illustrate support for their fellow Ohioan. In 1953 the Ohio buckeye became the state tree of Ohio.