Genera : 5
Species: 50 -60
Links to genus directory:
Links to dendrology genus directory:
Distribution: Maimly north temperate regions and inSoutheast Asia ,Central America and northwestSouth America.
Economic Uses: As a cultivated ornamental tree and used medicinally in China and Japan.
Defining Features of Interest: The family is placed in various orders by different botanists in their classification schemes.
Fossil Evidence: Fossils in the Eocene.