This name is a synonym of Campanula patula subsp. abietina (Griseb. & Schenk) Simonk..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 363843) with original publication details: Arch. Naturgesch. 18(1): 333 1852.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:139837-1.
This name was in version 1 of The Plant List, record kew-363843, and has not been changed.