What is "planetree"

Usage examples of "planetree".

In the mild breezes of the west and of the east the lofty trees wave in different directions their firstclass foliage, the wafty sycamore, the Lebanonian cedar, the exalted planetree, the eugenic eucalyptus and other ornaments of the arboreal world with which that region is thoroughly well supplied.

Into Berkeley Square, where a small steamcrane, chugging gamely between a pair of splintered planetrees, swung a great castiron ball into a crumbling Georgian facade.