⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Cynanchum sibiricum in version 1.1 of The Plant List.
This name is a synonym of Cynanchum thesioides .
The record derives from Tropicos which reports it as a synonym (record 2610815
) with original publication details: Rep. First Sci. Exped. Manchoukuo 4: 40, 90 40 1936.