A list of 26 species of lichens and 2 lichenicolous fungi from the Czech Republic with comments is given. 11 species are new for the country: the lichens Absconditella delutula, Aspicilia moenium, Bacidina chloroticula, Epigloea medioincrassata, Lecanora pseudistera, Micarea botryoides, Phaeocalicium compressulum, Trapeliopsis pseudogranulosa, Xanthoria calcicola and the lichenicolous fungi Endococcus pseudocarpus and Zwackhiomyces sphinctrinoides; 4 lichens are new for Bohemia (Agonimia tristicula, Bacidina arnoldiana, Buellia epigaea, Endocarpon psorodeum) and 1 for Moravia (Absconditella lignicola). Belonia incarnata is new for the Šumava Mts. Diploicia canescens, Parmelia glabra and Parmelia revoluta, species which had been missing in the Czech Republic for a long period of time, were recently rediscovered. Other included lichens are very rarely found and are known from only a few localities in the Czech Republic. A large number of records are from the Protected Landscape Area Křivoklátsko, in the Rakovník District. Key words: Czech Republic, Křivoklátsko, lichens and lichenicolous fungi, distribution, rare species.