(Clematis manipurensis)
Clematis montana (mountain clematis also Himalayan Clematis or anemone clematis) is an early flowering plant of the genus Clematis. A vigorous deciduous climber, in late Spring it is covered with a mass of small blooms for a period of about four weeks. The flowers are white, four-petalled, with prominent yellow anthers. It is native to mountain areas of Asia from Afghanistan to Taiwan.