The genus Platanus is a small genus of trees native to the Northern Hemisphere. They are the sole members of the family Platanaceae.

They are all large trees to 30–50 m tall, deciduous (except for P. kerrii), and are mostly found in riparian or other wetland habitats in the wild, though proving drought tolerant in cultivation away from streams.

They are known as planes in the Old World, and as sycamores in North America. Elsewhere, the name "sycamore" refers to either the fig Ficus sycomorus (the species originally so named), or the Sycamore Maple Acer pseudoplatanus.

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