New and rare Bulgarian boletes

The paper provides information about the first findings in Bulgaria of four rare and noteworthy taxa of Boletus. A new combination, B. persicolor, is proposed for the accommodation of Xerocomus persicolor into Boletus. Boletus depilatus, B. luteocupreus, B. permagnificus, and B. persicolor are described and illustrated. In addition a second locality in Bulgaria is reported for B. dupainii, which is one of the candidates for inclusion of the Appendix I of the Bern Convention. The potential conservation status of the five species is briefly discussed.