⚠ Version 1 of The Plant List has been superseded.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.

Cynanchum sibiricum var. gracilentum Nakai & Kitag. is a synonym of Cynanchum thesioides (Freyn) K.Schum.

This name is a synonym of Cynanchum thesioides (Freyn) K.Schum..

The record derives from Tropicos which reports it as a synonym (record 2610813) with original publication details: Rep. First Sci. Exped. Manchoukuo 1: 43 43 1934.