Rhamnaceae is a family of flowering plants commonly known as the buckthorn family. Synonyms for this word include the Rhamnoidae family and the buckthorn plant family. Members of this family are often shrubs or small trees and can be found in various habitats, including deserts, forests, and coastal areas. Some common genus names within Rhamnaceae include Rhamnus, Frangula, and Ceanothus. Plants within this family have been used for medicinal purposes, as well as for ornamental and landscaping purposes. The diversity of plant species within Rhamnaceae makes it an important family in both ecological and horticultural settings.