This name is a synonym of Campanula cochleariifolia Lam..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 364321) with original publication details: Stud. Sp. Campanula 48 1916.
This name was in version 1 of The Plant List, record kew-364321, and has not been changed.