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Mark Hyde, Bart Wursten and Petra Ballings   cc-by-nc

Cynanchum (Swallow Wort) is a genus of herb in the family Apocynaceae. They are climbers. They are native to The Contiguous United States, Puerto Rico, and U.S. Virgin Islands. Flowers are visited by Sphegocephala angavokeliensis. Individuals can grow to 25 m.

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EOL has data for 15 attributes, including:

Known occurrences, collected specimens and observations of swallow-wort. View this species on GBIF