Purple Berry Looking Plant. For this reason you can confuse them with blueberry bushes when you find them in the wild. Also are the leaves serrated like a saw or smooth on the edges.
Aralia spinosa often called devils walking stick is commonly confused for the American elderberry. I edited my answer to include pictures showing what to look for. Adults can easily tell pokeberries from grapes by their red stems which dont look like woody grapevines at all.
Pokeweed is an herbaceous perennial with multiple red stems.
Interestingly compared to other berries cloudberries are a good source of plant protein. Persian shield displays gorgeous purple leaves patterned in green veins. Salal bushes also look like blueberry bushes. The Amethyst coralberry cultivar Symphoricarpos x doorenbosii Kordes Amethyst reaches 3 to 5 feet high.