California Buckthorn is a native plant to the western United States also known as Rhamnus californica. It is a shrub or small tree with shiny, dark green leaves and a red, berry-like fruit. Some synonyms for California Buckthorn include Redberry Buckthorn, Coffeeberry, Sageberry, and Mala Mujer. The plant has been used by Native American tribes for medicinal purposes, including a tea from the leaves to treat stomach ailments and a poultice from the bark to treat skin and eye irritations. It is a popular plant for wildlife as the fruit is a food source for birds and mammals. Overall, California Buckthorn is a unique and important plant to the ecology and cultural history of the western United States.