schemas/VegCore/VegCore.ERD.mwb: merged taxon_concept and taxon, because every taxon is according to someone (whether that's Weakley, Tropicos, or the person identifying a taxon_occurrence). note that the according_to is usually different from the source (which is the datasource that owns the record), but if there is no specific according_to, the according_to is the datasource itself.
schemas/VegCore/VegCore.ERD.mwb: merged taxon_concept and taxon, because every taxon is according to someone (whether that's Weakley, Tropicos, or the person identifying a taxon_occurrence). note that the according_to is usually different from the source (which is the datasource that owns the record), but if there is no specific according_to, the according_to is the datasource itself.