The Persian ironwood (Parrotia persica), is a small deciduous tree or a large, multi-stemmed shrub. It is native to northern Iran and southern Azerbaijan and is named after the German naturalist Friedrich Parrot. Like the Sycamore and London plane tree, the bark of mature trees is smooth light brown and flaking. The flowers are somewhat like those of a relative, the witch-hazel, but dark red. The leaves are alternate, ovoid, often slightly lop-sided, 6–15 cm (2–6 in) long and 4–10 cm (2–4 in) across, with wavy margins; they emerge reddish-purple in spring, are glossy green in the summer, and turn a rich purple to brilliant red in autumn.