[in Polish with English abstract: ] Materials for the Distribution of Lichens and Lichenicolous Fungi in Poland, 6. The paper presents new localities of 27 species of lichens and 3 species of lichenicolous fungi, that are endangered in Poland or regionally rare. The paper also includes a new records of the non-lichenized fungus Naevia dispersa, which, due to its similarity to the lichenized representatives of the genus Arthonia s.l. is often included in lichenological publications. In addition to the list of new localities, a brief morphological and anatomical characterisation is provided for each species, and its distribution in Poland is discussed. The provided locality lists contain geographical coordinates and ATPOL grid squares, modified by S. Cieśliński and W. Fałtynowicz for the purposes of the Atlas of the Geographical Distribution of Lichens in Poland (published by W. Szafer Institute of Botany, Polish Academy of Sciences, 1993). Keywords: lichenized fungi; lichenicolous fungi; biodiversity; rare species; distribution in Poland.