Also called Cynanchum vincetoxicum.  Part of dogbane  family Apocynaceae.

Native to Eurasia.  Probably invasive in North America, but agencies currently track only black swallow-wort  Cynanchum louiseae and pale swallow-wort  Cynanchum rossicum .

Learn more about white swallow-wort Vincetoxicum hirundinaria

Best Control Practices BCP (Michigan) (.pdf) Biological Control in Eastern USA (.pdf page 217)

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