EN
In the territory of NP the Białowieża Forest no special research on specific structure of lichens of the Cetrelia has been carried out, and there are only single instructions in publications (Golubkov 1986, 1987 and others) whose definitions are based on morphological characteristics and results of colour chemical reactions which are not always reliable. Three taxa of Cetrelia (C. cetrarioides, C. monachorum, C. olivetorum) have been identified in a study of the genus in Belarussian part of the Białowieża Forest. Cetrelia monachorum is the commonest member of the genus in the Białowieża Forest (46 records), whereas C. olivetorum is known from 35 localities. Cetrelia cetrarioides appears to be the rarest species of the genus in the Białowieża Forest (2 records). The distribution and status of three species in the Białowieża Forest are reviewed, distribution maps are provided, and the merits of the segregates for conservation measures are discussed.