Cinda, my Ontario wild plants reference book doesn't list any black raspberries. It lists 3 kinds of raspberry, but they're all red-fruited, not black. It lists 2 blackberries, both with purplish-brown canes like my plant has, and it says Smooth Blackberry has rounded to thimble-shaped fruit. If my plant isn't Smooth Blackberry (Rubus canadensis), could it be a blackberry-raspberry hybrid?
