Ginkgo leaves. Leaves of the Chinese maidenhair tree, Ginkgo biloba. These two- lobed leaves are unique among trees in having no midrib and no network of veins; rather the leaves have a constantly branching fan of veins from the base of the leaf. The leaves turn a golden yellow in autumn. This species of maidenhair tree is the only living representative of the ancient Ginkgoales (family: Ginkgoaceae). Ginkgo biloba has separate male and female plants. The tree is adaptable to almost any climate, and from China it was successfully introduced into Europe early in the 18th century.