Artificial hybridization experiments were carried out between two species-pairs in the genus Campanula, viz. between C. persicifolia and C. latiloba, and between C. alliariifolia and C. ochroleuca. The hybrid between C. persicifolia and C. latiloba is completely sterile. For this reason the treatment as separate species of these closely allied taxa is justified. The hybrid between C. alliariifolia and C. ochroleuca. on the other hand, is completely fertile. Therefore, it is advisable to regard C. ochroleuca and C. alliariifolia as conspecific, as was previously done by Kem. Nathadze.