London Plane (Platanus hybrida) is thought to be a hybrid of the American Plane (P. occidentalis). It is grown as a street tree in most of Europe, except in the drier parts of the Mediterranean. It can be distinguished from the Oriental Plane by its more shallowly cut leaves and flower-heads which usually grow in pairs rather than in groups of three to six.


Trees and shrubs of the Mediterranean by Helge Vedel, translated from the Danish by Aubrey Rush (Penguin Guides, 1978), p.29