This name is a synonym of Campanula patula L..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 5500699) with original publication details: Fl. Ross. 2: 887 .
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:140796-1.
This name was in version 1 of The Plant List, record tro-5500699.