We used chloroplast polymerase chain reaction‐restriction‐fragment length polymorphism (PCR‐RFLP) and chloroplast microsatellites to assess the structure of genetic variation and postglacial history across the entire natural range of the common ash ( Fraxinus excelsior L.), a broad‐leaved wind‐pollinated and wind‐dispersed European forest tree. A low level of polymorphism was observed, with only 12 haplotypes at four polymorph...