Campanula tridentata subsp. biebersteiniana (Schult.) Ogan., Bot. Zhurn. (Moscow & Leningrad) 66: 403. 1981
Campanula tridentata subsp. biebersteiniana, Bot. Zhurn. (Moscow & Leningrad) 66: 403. 1981
is new combination for Campanula biebersteiniana in Roemer & Schultes, Syst. Veg. 5: 147. 1819
Campanula tridentata subsp. biebersteiniana, Bot. Zhurn. (Moscow & Leningrad) 66: 403. 1981