⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2726745, with some changes.
This name is a synonym of Clematis montana Buch.-Ham. ex DC..
The record derives from WCSP (in review) which reports it as a synonym with original publication details: J. Arnold Arbor. 61: 74 1980.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:888942-1.