The chestnut tree mouse (Pogonomys macrourus) is a species of rodent in the family Muridae. It is found in Indonesia and Papua New Guinea.
Tree mouse may refer to members of the following genera of rodents:
The chestnut group is a genus (Castanea) of eight or nine species of deciduous trees and shrubs in the beech family Fagaceae, native to temperate regions of the Northern Hemisphere.
The name also refers to the edible nuts they produce.
Chestnuts belong to the family Fagaceae, which also includes oaks and beeches. The four main species are commonly known as European, Chinese, Japanese, and American chestnuts, some species called chinkapin or chinquapin: