Rubus deamii

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Rubus deamii, commonly known as Deam's dewberry, is a North American dewberry in the rose family. It was described by L. H. Bailey in 1932. The plant grows in scattered areas of the east-central United States and southern Canada—from Ontario to Missouri, Tennessee, and West Virginia—and is not common anywhere. It has also been named Rubus gordonii and Rubus rosagnetis; Bailey named rosagnetis in honor of Sister Rose Agnes Greenwell.