The Sweet Chestnut (Castanea sativa, family Fagaceae), also known as the Spanish Chestnut, Portuguese Chestnut or European chestnut, is a species of chestnut originally native to southeastern Europe an Asia Minor. It is a medium-sized to large deciduous tree attaining a height of 20-35 m with a trunk often 2 m in diameter. The oblong-lanceolate, boldly toothed leaves are 16-28 cm long and 5-9 cm broad.