Baja, I've run into this several times -- cases in which the CoL and other sources list an accepted name that's newer than the synonym. In a couple of cases I researched, I found that the earliest name was subsequently removed as an illegitimate name and then reinstated at a later date. I don't know that this is true in this case, but it's possible in view of the many sources incorrectly insisting on adolphii as the spelling.
In any case, I would rather use the CoL as the authority in matters pertaining to our database.