Quercus robur leaves

Quercus robur, commonly known as the English oak or pedunculate oak, has distinctive leaves that are an important feature for its identification. The leaves are typically 7 to 14 centimeters long and 4 to 8 centimeters wide. They are characterized by their lobed margins, usually with four to five deep, rounded lobes on each side that extend halfway to the midrib. The lobes are separated by deep sinuses, giving the leaf a somewhat irregular and wavy outline.The upper surface of the leaves is dark green and glossy, while the underside is a paler green and may have a slightly hairy texture, especially along the veins. The leaf base is rounded to slightly heart-shaped, and the petiole, or leaf stalk, is relatively short, usually about 1 to 2 centimeters in length. In autumn, the leaves turn a golden-brown color before falling off the tree. The arrangement of the leaves on the branches is alternate, meaning they are not directly opposite each other on the stem. Overall, the leaves of Quercus robur are robust and sturdy, reflecting the hardy nature of the tree itself.