The phylogeographical structure of the European forest grass Hordelymus europaeus (Poaceae) was studied by sequencing three non-coding regions of chloroplast DNA. Forty-three populations within the entire natural distribution area were analysed.
The greatest haplotype variation and divergence were revealed on Balkan and Apennine Peninsula, suggesting main glacial refugia in these regions.The phylogeographical pattern found in H. europaeus is to certain extent similar with that found in Fagus sylvatica. This might imply a partly common postglacial colonisation history of these ecologically narrowly tied species.