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  1. By: Christensen, Knud Ib - Zarrei, Mehdi - Kuzmina, Maria - Talent, Nadia - Lin, Charlotte - Dickinson, Timothy
    Type: Article
    In: PhytoKeys
    Volume: 36
    Date: 2014
    Page Range: 1-26
    Publication Info: Pensoft Publishers 2014
    Subjects: diploid  DNA barcodes  hawthorn  Hybridization  ITS2  leaf shape  North America