Griffitharia thibetica
Griffitharia thibetica, the Tibetan whitebeam, is a species of flowering plant in the family Rosaceae, native to south western China and the Himalayas. Growing to tall by broad, it is a substantial deciduous tree. Like other whitebeams, the undersides of the leaves are white, giving a dramatic effect when the wind blows through them.
The more compact cultivar 'John Mitchell' has gained the Royal Horticultural Society's Award of Garden Merit.