Before the import of the American strawberries from which the cultivated strawberries have been obtained, there were no big strawberries in Europe.
A similar relationship exists between the European wild blueberries and the cultivated blueberries brought from America. The European native blueberries are smaller, but more fragrant.
Some of my favorite memories of preschool was gathering bilberries in the forest behind the school. It was essentially like Halloween with kids coming back sick from eating too much sugar.
I have used both "strawberry" and "blueberry" as generic names.
The European strawberry is also a distinct species, but belonging to the same genus with the American strawberries (Fragaria). The same for the European bilberry and the American blueberry that is the ancestor of the cultivated blueberries. They are different species of the same genus (Vaccinium).
it was always such a treat to stumble upon a patch of those