This name is a synonym.
* Campanula kladniana subsp. mentiens Witasek, Magyar Bot. Lapok 5: 241 (1906).
Campanula mentiens (Witasek) Prain, Index Kew., Suppl. 4: 35 (1913).
Campanula arctica subsp. mentiens (Witasek) Hruby in K.Domin & J.Podpera, Klíc Úplné Kvet. Republ. Ceskoslov.: 534 (1928).
Campanula polymorpha f. mentiens (Witasek) Hruby, Magyar Bot. Lapok 29: 204 (1930).
Campanula polymorpha var. mentiens (Witasek) Marriu, Fl. Republ. Popul. Român. 9: 109 (1964).
Campanula rotundifolia var. mentiens (Witasek) Tacik, Monogr. Bot. 20: 254 (1966).
Campanula tatrae subsp. mentiens (Witasek) Kovanda, Folia Geobot. Phytotax. 12: 66 (1977).
* Basionym/Replaced Synonym