The checklist includes 4,850 species of native, introduced, cultivated and naturalized vascular plants (see Table 3). Of these, 3,688 are supported by at least one of the 9,500 specimens in the database – records for the remaining species are based on the literature sources mentioned above. A list of the species that we know to be introduced, cultivated or naturalized is included as Table 4 (pages 367–373) and can be found at the end of the checklist, before the index to the genera.