⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-2750786, and has not been changed.

Cynanchum acutum var. longifolium (G.Martens) Ledeb. is a synonym of Cynanchum acutum subsp. sibiricum (Willd.) Rech.f.

This name is a synonym of Cynanchum acutum subsp. sibiricum (Willd.) Rech.f..

The record derives from WCSP (in review) which reports it as a synonym with original publication details: Fl. Ross. 3: 548 1847.