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Olacaceae is a family of flowering plants in the order Santalales with 90 genera and 180 species. They are woody plants, native throughout the tropical regions of the world.

The 1998 APG system and the 2003 APG II system assign it to the order Santalales in the clade core eudicots. Prior to the advent of molecular data, the circumscription of the family Olacaceae varied widely between different authorities. Among these various classifications, about 30 genera were included in the family. 15 genera ...