| Diosphaera asperuloides (Boiss. & Orph.) Buser | Campanula asperuloides (Boiss. & Orph.) Engl. |
| Diosphaera chalcidica Buser | Campanula rumeliana (Hampe) Vatke |
| Diosphaera hysterantha Rech.f. & Schiman-Czeika | Campanula postii (Boiss.) Engl. |
| Diosphaera jacquinii (Sieber) Buser | Campanula jacquinii (Sieber) A.DC. |
| Diosphaera jacquinii chalcidica (Buser) Hayek | Campanula rumeliana (Hampe) Vatke |
| Diosphaera postii (Boiss.) Bornm. | Campanula postii (Boiss.) Engl. |
| Diosphaera rumeliana (Hampe) Bornm. | Campanula rumeliana (Hampe) Vatke |
| Diosphaera tubulosa (Boiss.) Bornm. | Campanula buseri Damboldt |