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Sect. Tracheliopsis (Buser.) Damboldt, stat. nov.. Syn.:

• 'Trachelium' Boiss., Fl. Or. 3:960(1875).
• Tracheliopsis Buser in Bull. Herb. Boiss. 2:519(1894).
• Diosphaera Buser, l.c. 524.
• Subgenus vel sect. Diosphaera (Buser) Engler in Engler & Prantl, Naturl. Pflanzenfam. 4(5), Nachtr.:319(1897).
• Subgenus vel sect. Tracheliopsis (Buser) Engler, l.c.

Lectotype (designated here). Campanula buseri Damboldt in Notes R.B.G. Edinb. 35:47(1976) [Syn.: Tracheliopsis tubulosa (Boiss.) Buser].¹⁾

Campanula buseri Damboldt, nom. nov. [sect. Tracheliopsis (Buser) Engler].

Syn.:

• Trachelium tubulosum Boiss., Diagn. ser. 1, 11:60(1849).

• Tracheliopsis tubulosa (Boiss.) Buser in Bull. Herb. Boiss. 2:525(1897).

• Campanula tubulosa (Boiss.) Engler in Engler & Prantl., Naturl. Pflanzenfam. 4(5), Nachtr. 319(1897) non Lam.(1785).

• Diosphaera tubulosa (Boiss.) Bornm. in Beih.Bot.Centr. 38:338(1921).²⁾

Campanula buseri var. berytensis

Campanula buseri var. libanotica

Campanula buseri var. taurica