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 364327) with original publication details: Cat. Pl. Vall. Aoste 619 1911.
This name was in version 1 of The Plant List, record kew-364327, and has not been changed.