of each data.frame and their columns:
<em>ref_ID</em> - Identification number of the reference<br><em>list_ID</em> - Identification number of the list<br><em>entity_ID</em> - Identification number of the polygon<br><em>name_ID</em> - Identification number of the genus before taxonomic
harmonization<br><em>cf_genus</em> - Whether the genus name is uncertain<br><em>cf_species</em> - Whether the species' epithet is uncertain<br><em>aff_species</em> - Species' epithet uncertain<br><em>questionable</em> - Whet