First record of the Mediterranean species Ciboria brunneorufa in the Balkan Peninsula.
To date, there are no published studies or official papers on mycobiota in coastal Bosnia and Herzegovina. In light of this fact, the author conducted a brief mycological study in the Mediterranean part of the country in February 2016. This paper offers a morphological description of the rare Mediterranean species Ciboria brunneorufa, an analysis of microscopic characters and a comparison with data of other authors. It also discusses the global distribution pattern and abundance of C. brunneorufa. An increased level of negative anthropogenic influence is expected on the Klek Peninsula in the future. In order to conserve this habitat unique in Bosnia and Herzegovina and to protect C. brunneorufa and other fungal species, it is necessary to make an environmental risk assessment and to carry out further systematic mycological field studies.