⚠ Version 1 of The Plant List has been superseded.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 acuminata in version 1.1 of The Plant List.
This name is a synonym of Clematis siamensis .
The record derives from Tropicos which reports it as a synonym (record 50191286
) with original publication details: Verh. Bot. Vereins Prov. Brandenburg 26: 167 167 1885.