⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Clematis japonica in version 1.1 of The Plant List.
This name is a synonym of Clematis urophylla .
The record derives from Tropicos which reports it as a synonym (record 27104020
) with original publication details: Verh. Bot. Vereins Prov. Brandenburg 26(2): 159 159 1885.