Didymium difforme (Pers.) Gray

Ing, B.. Place of collection: Greece; Mount Ossa, Agiopriono (N39°1000' E22°4500'). Date of collection: 24 March 1988. Associated organism: Plantae indet. (leaf, ). Collector: Ing, B.. Identifier: Ing, B..

Gracia, E.. Place of collection: Greece; Halkidiki; Cassandra Peninsula; Agia Para (N39°5700' E23°2900'). Date of collection: 19 March 1988. Associated organism: Quercus coccifera (leaf). Collector: Gracia, E.. Identifier: Gracia, E..

Gracia, E.. Place of collection: Greece; Thessaloniki, cemetery (N40°3600' E22°5800'). Date of collection: 19 March 1988. Associated organism: Plantae indet. (leaf, ). Collector: Gracia, E.. Identifier: Ing, B..

Gracia, E.. Place of collection: Greece; Halkidiki; Cassandra Peninsula; Paliouri (N39°5700' E23°4000'). Date of collection: 19 March 1988. Associated organism: Cistus salviaefolius (leaf, ). Collector: Gracia, E.. Identifier: Gracia, E..