This name is a synonym of Campanula transsilvanica Schur ex André.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 366576) with original publication details: Feddes Repert. Beih. 30(2): 530 1930.
This name was in version 1 of The Plant List, record kew-366576, and has not been changed.