Categories Nuts & Seeds | Chestnut (Sweet Chestnut) Sweet Chestnut Botanical name: Castanea sativa Other name(s): N/A Family: Fagaceae More infos: Sweet Chestnut is not related to the Horse-Chestnut Sweet Chestnuts (bottom) and Horse-Chestnut (top). Related plants:Castanea sativa Fagus sylvatica Quercus sp.