⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2725946, and has not been changed.
This name is a synonym of Clematis hirsutissima Pursh.
The record derives from WCSP (in review) which reports it as a synonym with original publication details: W. Amer. Sci. 5: 5 1888.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:60347-2.