EDIT

    /**

     * Returns the boolean value indicating whether <i>this</i> taxon is a misapplication

     * (misapplied name) for at least one other taxon.

     */

    // TODO cache as for #hasTaxonomicChildren

    @Transient

    public boolean isProparteSynonym(){

        return computeProparteSynonymRelations() > 0;

    }

    /**

     * Counts the number of misapplied name relationships (including pro parte misapplied

     * names) where this taxon represents the

     * misapplied name for another taxon.

     * @return

     */

    private int computeProparteSynonymRelations(){

        int count = 0;

        for (TaxonRelationship rel: this.getRelationsFromThisTaxon()){

            if (rel.getType().equals(TaxonRelationshipType.PRO_PARTE_SYNONYM_FOR())

                    || rel.getType().equals(TaxonRelationshipType.PARTIAL_SYNONYM_FOR())){

                count++;

            }

        }

        return count;

    }

    /*

     * PRO PARTE SYNONYMS

     */

    /**

     * Returns the set of taxa playing the source role in {@link TaxonRelationship taxon relationships}

     * (with {@link TaxonRelationshipType taxon relationship type} "Pro Parte Synonym for") where

     * <i>this</i> taxon plays the target role.

     *

     * @see  #getTaxonRelations()

     * @see  #getRelationsToThisTaxon()

     */

    @Transient

    public Set<Taxon> getProParteSynonyms(){

        Set<Taxon> taxa = new HashSet<>();

        Set<TaxonRelationship> rels = this.getRelationsToThisTaxon();

        for (TaxonRelationship rel: rels){

            TaxonRelationshipType relType = rel.getType();

            if ( relType.equals(TaxonRelationshipType.PRO_PARTE_SYNONYM_FOR())){

                taxa.add(rel.getFromTaxon());

            }

        }

        return taxa;

    }