The 15th fascicle (20 numbers) of the exsiccata 'Lichenicolous Biota' is published. The issue contains material of 19 non-lichenized fungal taxa (17 teleomorphs of ascomycetes, 3 anamorphic states of ascomycetes), including paratype material of Lawreya glyphidiphila U.Braun et al. (no 347). Furthermore, collections of the type species of the following genera are distributed: Arthophacopsis (A. parmeliarum), Illosporiopsis (I. christiansenii), Lawreya (L. glyphidiphila), and Lichenopeltella (L. maculans). Corticifraga nephromatis. is herewith reported for the first time in Central Europe.