CHESTSNUT, AMERICAN -  (Castanea dentata) heartwood is a light to medium brown, darkening to a reddish brown with age. Narrow sapwood is well-defined and is pale white to light brown. Wormy Chestnut is also seen, which is chestnut that has been damaged by insects, leaving holes and other discoloration in the wood.
The Chestnut Blight of the early 1900s, caused by an accidentally introduced of Asian Bark Fungus (Cryphonectria parasitica), the Blight was responsible for killing over three billion chestnut trees.