⚠ Version 1 of The Plant List has been superseded.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 ianthina in version 1.1 of The Plant List.
This name is a synonym of Clematis fusca var. fusca .
The record derives from Tropicos which reports it as a synonym (record 27104423
) with original publication details: J. Jap. Bot. 12(12): 846-847 846 1936.