⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2725940, 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: Fl. Bor.-Amer. 1: 1 1830.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:60342-2.