This section is from the book "Commercial Gardening Vol4", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
The American Plane (P. occidentalis) is a fine deciduous tree, rarely seen. What is known as the "London Plane" is a form of the Common or Oriental Plane (P. orientalis) called acerifolia, recognized by its divided Maple-like leaves. There are forms, such as cuneata, the leaves of which are distinctly wedge-shaped at the base; laciniata, with deeply divided lobes; and variegata, with leaves blotched and streaked with white and green. The London Plane (acerifolia) is a fine tree for town streets, and is largely grown, often under the name of occidentalis. Usually raised from seeds.