Nothofagus obliqua, commonly known as Patagonian oak, roble, or roble beech, is a deciduous tree native to Chile and Argentina. It grows up to a height of 50 meters with a diameter of 2 meters. The bark is gray-brownish or dark brown, and the leaves are alternate, somewhat curled, and serrated. Male and female flowers are small and rather inconspicuous. Its wood is valued for its durability and is used in furniture and construction. Unfortunately, trees cultivated from some provenances can be damaged by frosts. Seeds sourced from Neuquen, Argentina, have proved to be the hardiest. It can be used as a fast-growing hedge or windbreak and has also been planted on the North Pacific Coast of the United States.