A hybrid of Oriental and Occidental Plane probably bred in Spain in the 17th century. It has proved to be resilient in polluted urban settings and is widely planted in European cities – hence the common name. It can grow into a very large tree with big palmate leaves and an attractive scaly bark on the trunk with grey, brown and cream colouring. Round seeds hang like baubles throughout the winter. The stems can be swollen and burred and take on impressive girth (see the specimen amongst the gravestones near St James’ Park). This may be caused by a viral infection.