⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2726886, with some changes.
This name is a synonym of Clematis heracleifolia var. urticifolia (Nakai ex Kitag.) U.C.La.
The record derives from WCSP (in review) which reports it as a synonym with original publication details: J. Jap. Bot. 13: 346 1937.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:710168-1.