⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2751419, with some changes.
This name is a synonym of Vincetoxicum pycnostelma Kitag..
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Enum. Sperm. Jap. 1: 153 1948.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:96474-1.