Hydrangea anomala aka Climbing Hydrangea

Hydrangea anomala, also known as the Japanese climbing-hydrangea, is a vigorous, deciduous or semi-evergreen climber that can grow up to 12 meters in height. Native to the woodlands of the Himalaya, southern and central China, and northern Myanmar, it is a woody climbing plant that uses small aerial roots to climb trees or rock faces. The leaves are ovate, with a heart-shaped base, coarsely serrated margin, and an acute apex. In mid-summer, it produces flat corymbs of flowers, consisting of small peripheral sterile white flowers and numerous small, creamy-white fertile flowers. The fruit is a dry urn-shaped capsule containing winged seeds. This species can be found in dense to sparse forests, along stream banks, or on rocky mountain slopes at elevations ranging from 500 to 2900 meters. Its bark is brown and peeling when mature, and it has mid-green, ovate leaves that are coarsely toothed. The flowers form broad, loose clusters, with small greenish-white true flowers in the center and large, showy white florets around the edges. There is a closely related species, Hydrangea petiolaris, which is sometimes considered a subspecies of H. anomala. It is larger in size, reaching up to 20 meters in height, and has larger flower corymbs up to 25 centimeters in diameter. Both species are commonly referred to as Climbing hydrangeas.