The common name of Platanus × acerifolia, widely planted as a city street tree, is the London plane.
It is also called the hybrid plane or Platanus × hispanica, with Platanus × acerifolia treated as a later synonym. The tree is a hybrid between the oriental plane, Platanus orientalis, and the American sycamore, Platanus occidentalis. That parentage explains why it can resemble several different plane trees and why “American sycamore” is a plausible but incorrect choice.
London planes became especially valuable in cities because they tolerate atmospheric pollution, compacted soil, pruning, and difficult roadside conditions. Their mottled, exfoliating bark and broad, maple-like leaves are familiar sights in streets, parks, and squares across temperate regions. Victorian London planted them extensively during the industrial era, when pollution made many other trees less suitable.
The species can grow 20–40 metres tall and produces spherical clusters of wind-dispersed fruits. Its toughness is not cost-free: vigorous roots may disturb paving, and shed leaf hairs and seeds can irritate airways. Even so, its resilience keeps it a standard urban tree.