Campanula crassifolia Hub.-Mor. & C. Simon, Bauhinia 2: 197. 1963, nom. illeg.1
is basionym for Campanula oligosperma in Davis (ed.), Fl. Turkey 6: 46. 1978
is basionym for Campanula glaucophylla, Notes Roy. Bot. Gard. Edinburgh 35: 49. 1976, nom. illeg.2,3
2. Lammers 2010: World Checklist [Database], 3. nom. illeg.