Known as the Dawn Redwood or the Chinese Water Fir, this fast-growing, deciduous conifer is one of a kind in the plant world and has a remarkable history.

It had been known to science only by fossil remains until a forester discovered a living tree growing near a village in central China in 1941.

A few years later, further trees were found in a neighbouring valley.

The sensational news spread across the world that living specimens of this fossil tree had been discovered. In early 1948 seeds collected from these trees were sent to the Arnold Arboretum in Massachusetts.

The tree in the foreground of the picture was grown at Harewood from seed sown in 1997 by the head gardener and was one of the first trees to be planted as part of the new Sino-Himalayan plant collection.