⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-2610833, with some changes.

Vincetoxicum amplexicaule var. castaneum (Makino) Kitag. is a synonym of Cynanchum amplexicaule (Siebold & Zucc.) Hemsl.

This name is a synonym of Cynanchum amplexicaule (Siebold & Zucc.) Hemsl..

The record derives from Tropicos which reports it as a synonym (record 2610833) with original publication details: Rep. Inst. Sci. Res. Manchoukuo 4: 84 84 1940.