Lists the areas Euro+Med PlantBase states a taxon's status for, with the
ISO 3166-1 alpha-2 country code of the areas that are one country. Areas are
not countries: some combine several ("Italy, with San Marino and Vatican
City"), some are part of one (a region of European Russia, an island group),
and the level-2 areas split a combined area into its countries (Au(A)
Austria and Au(L) Liechtenstein under Au). Only an area that is exactly
one country carries an iso2.
Examples
old <- options(taxify.data_dir = taxify_example_data())
euromed_areas()
options(old)