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The hemiparasitic European mistletoe (Viscum album) from the family Viscaceae (Santalaceae s.l.) is able to infest more than 380 woody taxa in Europe. At the beginning of the 20th century, less than 10 % of Hungary was infested. The distribution area was centralized in the Transdanubian Mountains, and no mass occurrence was noticed elsewhere. Since then, the infested area has almost tripled, and heavily...