Welcome to ATP, HemNorth.
HemNorth said:In Wikipedia, the blossoms shown are much finer than this image.
This image actually was taken from Wikipedia.
https://es.wikipedia.org/wiki/...
The image originally was added to the Campanula rapunculus entry in error and was later moved to the C. rapunculoides entry. Are you now saying it isn't C. rapunculoides? I'm sorry if I'm misunderstanding.
As for the image of C. collina that arouses your suspicions, please enlarge the image and scroll down to "Post a comment about this photo." Air your concerns in the comment, which will automatically create a thread in the Plant Photos Forum and notify the image contributor of the comment.