def self.disjoint_taxon_name_relationships
    self.parent.disjoint_taxon_name_relationships +
        self.collect_to_s(TaxonNameRelationship::Icn::Unaccepting,
                          TaxonNameRelationship::Icn::Unaccepting::OriginallyInvalid,
                          TaxonNameRelationship::Icn::Unaccepting::Misapplication) +