I tried to enter all the synonyms of it, but the system sends me to Galium brevifolium, while ITIS gives Galium Mollugo as the accepted name..
So G. brevifolium must be a synonym as the system sends me to that one?
I have quite a bit of experience with that myself, Myriam. The synonym entries have to be deleted from the database before you can add them to the correct accepted entry.