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  1. By: Hock, Maria - Beckmann, Michael - Hofmann, Rainer - Bruelheide, Helge - Erfmeier, Alexandra
    Type: Article
    In: NeoBiota : advancing research on alien species and biological invasions
    Volume: 26
    Date: 2015
    Page Range: 21-37
    Publication Info: Sophia, Bulgaria Pensoft Publishers
    Subjects: Congeneric species pairs  Echium  invasive vs. non-invasive species  local adaptation  native vs. exotic origins  pre-adaptation  Verbascum
  2. By: Mauss, Volker - Müller, Andreas
    Type: Article
    In: Journal of Hymenoptera research
    Volume: 39
    Date: 2014
    Page Range: 119-153
    Publication Info: Washington, D.C International Society of Hymenopterists
    Subjects: Echium  flower association  mating behaviour  nest construction  oligolecty  Palaearctic  sleeping aggregation
  3. By: Müller, Andreas - Mauss, Volker - Prosi, Rainer
    Type: Article
    In: Journal of Hymenoptera research
    Volume: 60
    Date: 2017
    Page Range: 99-109
    Publication Info: Washington, D.C International Society of Hymenopterists
    Subjects: Apiformes  Echium  Heat tolerance  Hoplitis adunca species group  labial glands