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Sweet Chestnut (Castanea species). Forest Chestnuts. The American chestnut (Castanea dentata) was one of the largest growing forest trees in eastern North America. It was important for timber as well as nuts for human use as well as wildlife.A deadly fungus disease, introduced from the Orient effectively wiped out this chestnut in the first half of the 20th century.he American chestnut (Castanea dentata) was one of the largest growing forest trees in eastern North America. It was important for timber as well as nuts for human use as well as wildlife. A deadly fungus disease, introduced from the Orient effectively wiped out this chestnut in the first half of the 20th century.
The horse-chestnut (Aesculus hippocastanum), a European native, is occasionally seen as a planted ornamental shade tree, but Ohio buckeye (Aesculus glabra) is the most common of the three. Ohio buckeye is an American native and grows in woods as close as northern Iowa, northern Illinois, and Michigan.ccasionally people ask about the edibility of chestnuts. In almost every case the 'chestnut' turns out to be the non-edible horse-chestnut or buckeye.