The oak leaf is the leaf of the oak tree, belonging to the genus Quercus. These leaves are typically lobed and vary in shape and size depending on the specific species of oak. They are usually green during the growing season and can turn vibrant shades of red, orange, or yellow in the fall. Oak leaves play a crucial role in the ecosystem by providing food and habitat for various wildlife, including insects and birds. They also contribute to the soil's health as they decompose, enriching it with organic matter. The oak tree itself is known for its strength and longevity.