⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-27103284, and has not been changed.
This name is a synonym of Clematis hirsutissima Pursh.
The record derives from Tropicos which reports it as a synonym (record 27103284) with original publication details: Fl. Rocky Mts. 292 292 1917.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:267097-2.