Boysenberries are a type of fruit that originated in California and are a hybrid of raspberries, blackberries, and loganberries. There are several synonyms that can be used to refer to boysenberries, depending on the context and location. Some of the common synonyms include loganberries, raspberries, blackberries, and mulberries. Boysenberries are also sometimes referred to as brambles or bush fruit. In some parts of the world, they are known as dewberries and tayberries. Whatever name they go by, boysenberries are a delicious and nutritious fruit that can be used in a variety of culinary applications, from jams and jellies to pies and tarts.