en.wikipedia.org
en.wikipedia.org
missouribotanicalgarden.org
Missouri Botanical Garden
https://www.missouribotanicalgarden.org › PlantFinder › PlantFinderDetails.aspx?taxonid=299769
monaconatureencyclopedia.com
Monaco Nature Encyclopedia
https://www.monaconatureencyclopedia.com › vincetoxicum-hirundinaria › ?lang=en
fws.gov
U.S. Fish and Wildlife Service
https://www.fws.gov › species › white-swallow-wort-vincetoxicum-hirundinaria
efloras.org
myplantin.com
powo.science.kew.org
Plants of the World Online
https://powo.science.kew.org › taxon › urn:lsid:ipni.org:names:102810-1
sciencedirect.com
worldfloraonline.org
World Flora Online
https://www.worldfloraonline.org › taxon › wfo-0000421723
pfaf.org
Plants For A Future
https://pfaf.org › user › Plant.aspx?LatinName=Vincetoxicum+hirundinaria
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