Fragile has a lot of tuberose in it. Mark Jacobs is mainly gardenia. Gardenia and magnolia when used in perfumes are always made with a blend of other floral and synthetic notes since there is no way to extract the scent from the real flowers.
Maybe someone else can clarify further.
Edit: Just did some research and there seem to be a means of extracting gardenia nowadays, but it's so expensive it is rarely used.