This name is a synonym.
Campanula macrorhiza var. trianthemos Vuk., Linnaea 26: 330 (1853).
Marianthemum divergens (Waldst. & Kit. ex Willd.) Schur, Enum. Pl. Transsilv.: 433 (1866).
Campanula sibirica var. major Boiss., Fl. Orient. 3: 901 (1875), nom. superfl.
Campanula sibirica var. divergens (Waldst. & Kit. ex Willd.) Trautv., Trudy Imp. S.-Peterburgsk. Bot. Sada 4: 164 (1876), nom. illeg.
Campanula sibirica subsp. divergens (Waldst. & Kit. ex Willd.) Nyman, Consp. Fl. Eur.: 476 (1879).