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Sources:
http://www.ktva.com/story/38658625/giant-hogweed-sends-va-teen-to-hospital-burn-unit
https://www.dec.ny.gov/animals/39809.html
https://www.nytimes.com/2018/07/02/us/giant-hogweed-nyt.html
https://www.snopes.com/fact-check/giant-hogweed-toxicity-warning/
https://www.dec.ny.gov/animals/72934.html
https://www.nwcb.wa.gov/weeds/giant-hogweed
https://www.sciencedirect.com/topics/neuroscience/furanocoumarins
https://ecosystems.psu.edu/research/centers/private-forests/news/2014/what-makes-invasive-plants-successful
https://ukntrees.ca.uky.edu/Treetalk/invasive-characteristics
https://www.cambridge.org/core/journals/seed-science-research/article/limited-evidence-for-allelopathic-effects-of-giant-hogweed-on-germination-of-native-herbs/F807CE66A9012F75C4F62DF3B10C40A5
https://www.scientificamerican.com/article/invasive-giant-hogweeds-solar-activated-sap-causes-blistering-skin-burns/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3589309/
https://www.ncbi.nlm.nih.gov/pubmed/25714817
https://onlinelibrary.wiley.com/doi/abs/10.1002/jsfa.2979
https://emedicine.medscape.com/article/1119566-overview
Images:
https://en.wikipedia.org/wiki/File:Kavkasioni.JPG
https://en.wikipedia.org/wiki/File:Caucasus_topographic_map-en.svg
https://commons.wikimedia.org/wiki/File:Expansion_of_hogweed_A.svg
https://commons.wikimedia.org/wiki/File:B%C3%A4renklau.jpg
https://commons.wikimedia.org/wiki/File:Heracleum_mantegazzianum_06_by_Line1.jpg
https://commons.wikimedia.org/wiki/File:Reuzenbereklauw.JPG
https://commons.wikimedia.org/wiki/File:Velky_bolsevnik.jpg
https://commons.wikimedia.org/wiki/File:Heracleum_mantegazzianum_03_by_Line1.jpg
https://de.wikipedia.org/wiki/Datei:Heracleum_-_B%C3%A4renklau_-_Hautreaktion.png