Fascicles 12 & 13 of Lichenotheca Graecensis comprise 40 collections of lichens from the following countries (and administrative subdivisions): Austria (Carinthia; Lower Austria; Salzburg; Styria), Croatia (Rab Island), Germany (Bavaria), Greece (Kos Island), Italia (Trentino-Alto Adige), Portugal (Madeira), Russia (Buryatia; Krasnoyarsk; Tatarstan), Spain (Canary Islands), Uruguay (Florida; Rocha), and United States of America (Alaska). TLC-analyses were carried out for Chrysothrix candelaris, Ch. chlorina, Cladonia arbuscula ssp, squarrosa, C. gracilis, and Lepraria lobificans