Lichenicolous fungi known from the natural region Black Forest are listed, mainly based on recent finds. On the whole, 197 taxa are mentioned, including 183 described obligately lichenicolous fungi. Lichenosticta wirthii (on Loxospora cismonica) and Tremella altimontana (on Caloplaca cerina) are described as new to science. Further 17 species are new to Germany: Carbonea aggregantula, Clypeococcum cladonema, Didymocyrtis melanelixiae, Endococcus sardous, Lichenostigma rupicolae, Minutophoma chrysophthalmae, Neobarya peltigerae, Polycoccum versisporum, Rhymbocarpus neglectus, Roselliniopsis groedensis, Sclerococcum pertusariicola, Sphaerellothecium araneosum, S. stereocaulorum, Stigmidium leprariae, Taeniolella chrysothricis, Tremella tuckerae, Trimmatostroma vandenboomii and Weddellomyces turcicus. Another 42 species are new to Baden-Württemberg. Putative new species from the genera Endococcus, Lichenochora, Lichenothelia, Muellerella, Phaeoseptoria, Sphaerellothecium, Stigmidium and Trimmatostroma are sketched but not formally described. The distribution, rarity and endangerment of lichenicolous fungi and the possibility to evaluate these factors are discussed. Key words: Lichenicolous fungi, SW Germany, Black Forest, new records, ecology, endangerment.