Note that for bacteria that are not Cyanobacteria (blue-gree algae), there are a large number of old names that have not been validated for use since the 1980 cut-off for nomenclature. Many of these are effectively unidentifiable and cannot be properly placed in synonymy. Such names are not being added to ITIS, but when they already existed in the database, they are being treated as database artifacts and left linked to the kingdom-level name Bacteria. When and if such names are properly placed in the modern literature they can be moved, as needed, in ITIS. Note also that the vast majority of cyanobacterial names, while not validly published under the bacterial Code, may be validly published under the botanical Code, which is the applicable Code of nomenclature for this group. As a review of the nomenclatural validity of cyanobacteria is undertaken these may be treated and placed as appropriate within ITIS