Abstract
Pleurozium schreberi is a common and widespread species that has been the object of many studies, and its biology and ecology are well known. However, genetic studies on this species are limited or even absent. Because of the lack of any data about the genetic diversity of the moss species P. schreberi in Poland, the present paper describes the results of the studies carrying out for the first time this kind of research based on the atpB-rbcL spacer sequences of chloroplast DNA. A total of 35 specimens of P. schreberi from 19 locations in Poland were sampled. Total genomic DNA was extracted, amplified, and sequenced, and all obtained sequences were analyzed. Our findings suggest the low genetic diversity of P. schreberi in Poland. We detected four different haplotypes, shared between different populations.