Rubus rosa

Rubus rosa is a North American species of flowering plant in the rose family. It grows in eastern Canada (Québec) and the eastern and central United States (from Maine south to North Carolina and west as far as Nebraska).
The genetics of "Rubus" is extremely complex, so that it is difficult to decide on which groups should be recognized as species. There are many rare species with limited ranges such as this. Further study is suggested to clarify the taxonomy.