Each fruit has variable weight and size depending on the variety; the colour may vary in the streaks, shades or streaks but is usually brown. Botany is an achenium (or on some texts “walnut”), semi-spherical or flattened. At the base there is the hilar scar, a clear elliptical “spot”, corresponding to the contact zone between hedgehog and chestnut. On the contrary, there is a tip that ends with what was the esteem of the flower that is preserved also in the ripe fruit. The leaves are lanceolate, toothed, up to 15-20 cm long. The plant reaches the 30-35 m of height and over 500 years of age. There are cases of plants that have passed the millennium.