Cynanchum_rossicum (Kleopow) Borhidi
Cynanchum medium auct. non R. Br.
Vincetoxicum medium auct. non (R. Br.) Decne.
Vincetoxicum rossicum (Kleopow) Barbarich
 Link to Wikipedia, Cynanchum_rossicum - "...problematic in the Great Lakes Basin where its invasive ways are disturbing native birds and plants in the area. It is a possible threat to the butterflies as well because it interferes with the native hosts present in the area..."
 Link to USDA Plants, Profile and map for Cynanchum rossicum (Kleopow) Borhidi - European swallow-wort