File references.boreal-gh.fasta This file contains the sequences produced by the trnL g/h primers (Taberlet et al. 2007 Nucleic Acids Research, Vol. 35, No. 3 e14). The sequences have been produced by sanger sequencing. Data collection: Galina Gussarova identified the specimens. Galina Gussarova collected tissues in the herbarium. Virginia Mirre extracted DNA. Virginia Mirre amplified DNA Virginia Mirre, Galina Gussarova sequenced DNA and check the sequences. Contact author: Pierre Taberlet (pierre.taberlet@ujf-grenoble.fr) The header of each sequence contains: (i) the ID for the sequence (ii) the scientific name of the correponding taxon (scientific_name) (iii) the taxonomic rank of ncbi taxid (taxonomic_rank) (iv) the ncbi taxon identifier (taxid) (v) optionnaly if rank=group; the list of merged taxa