You selected Campanula tridentata var. rupestris Trautv. This is a synonym for:

Accepted scientific name:
Campanula tridentata subsp. biebersteiniana (Schult.) Ogan. (accepted name) 1 literature reference for Campanula tridentata subsp. biebersteiniana (Schult.) Ogan.
Synonyms:
Campanula akuschensis E.S.Husseinov (synonym) 1 literature reference for Campanula akuschensis E.S.Husseinov
Campanula biebersteiniana Schult. (synonym) 1 literature reference for Campanula biebersteiniana Schult.
Campanula rupestris M.Bieb., nom. illeg. (synonym) 1 literature reference for Campanula rupestris M.Bieb., nom. illeg.
Campanula scapifoliosa A.P.Khokhr. (synonym) 1 literature reference for Campanula scapifoliosa A.P.Khokhr.
Campanula tridens Rupr. (synonym) 1 literature reference for Campanula tridens Rupr.
Campanula tridentata var. rupestris Trautv. (synonym) 1 literature reference for Campanula tridentata var. rupestris Trautv.
Hemisphaera tridens (Rupr.) Kolak. (synonym) 1 literature reference for Hemisphaera tridens (Rupr.) Kolak.
Common names: -
Classification:
Plantae
Phylum Magnoliophyta
Class Magnoliopsida
Order Campanulales
Family Campanulaceae
Genus Campanula
Species Campanula tridentata
Distribution: Caucasus
Additional data: -
Source database: World Checklist of Selected Plant Families, 27 Nov 2009
Latest taxonomic scrutiny: Govaerts R., 13-Jun-2008
Online resource: http://apps.kew.org/wcsp/namedetail.do?accepted_id=366593&repSynonym_id=-9998&name_id=366593&status=true
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:27147902-60a7-102d-be47-00304854f810:ac2010