The rare fungicolous fungus Pseudotrichia mutabilis (Pers.) Wehm.: new data and a historical perspective

The paper reports two new records of a rare fungicolous fungus Pseudotrichia mutabilis (Melanommataceae, Pleosporales) from Ukraine. Both specimens were collected within protected areas in association with two xylariaceous species, Hypoxylon crocopeplum and Rosellinia corticium. The paper provides descriptions, nomenclatural data, and original illustrations of the reported species. Information on substrate specialization and nutritional strategies of Pseudotrichia mutabilis, as well as general distribution of the species and known localities in Ukraine are specified and summarized