Platanaceae is a family of flowering plants. It has been recognized by almost all taxonomists, and is sometimes called the "plane-tree family". The plane-tree is referenced in Pliny the Younger's letter to Domitius Apollinaris as part of his description of his Tuscan Villa located somewhere in Tuscany in the 1st Century.
The family consists of only a single living genus Platanus, of six to ten species of tall trees, native to temperate and subtropical regions of the Northern Hemisphere. The hybrid London plane is widely planted in cities worldwide.
The APG II system of 2003 allows the option of including it in the family Proteaceae, or treating it as distinct as a segregate family. In as far as APG II accepts the family it is placed in the order Proteales, in the clade eudicots. This represents a slight change from the APG system, of 1998, which did accept this family.
The Cronquist system of 1981 recognized the family and placed it in order Hamamelidales, in subclass Hamamelidae [sic] in class Magnoliopsida (dicotyledons).
The Dahlgren system and Thorne system (1992) also recognized this family and placed it in the order Hamamelidales in superorder Rosanae in subclass Magnoliidae (dicotyledons).
The Engler system, in its 1964 update, also recognized the family and placed it in the order Rosales in subclass Archichlamydeae of class Dicotyledoneae.
The Wettstein system, last revised in 1935, also recognized the family and placed it in the order Hamamelidales in the Monochlamydeae in subclass Choripetalae of the class Dicotyledones.
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