Rubus fruticosus is commonly known as blackberry, however, there are many synonyms for this shrubby plant. Some of the common synonyms for Rubus fruticosus include Brambleberry, Dewberry, Thimbleberry, and Tayberry. Brambleberry is commonly used to refer to the blackberry fruit, while Dewberry, a plant closely related to the blackberry, is sometimes confused with it. Thimbleberry and Tayberry are hybrid varieties of blackberry, but with different characteristics. These synonyms are used interchangeably depending on the region and the type of blackberry being referred to. Regardless of the synonym used, Rubus fruticosus remains a popular and delicious fruit that is used in many culinary applications.