Synonyms
Leuzea rhapontica subsp. bicknellii (Briq.) Holub
Centaurea rhapontica var. bicknellii Briq.
Rhaponticum scariosum subsp. bicknellii (Gugler) Pignatti
Rhaponticum bicknellii (Briq.) Banfi, Galasso & Soldano
Stemmacantha bicknellii (Briq.) Landolt
Centaurea rhapontica f. bicknellii (Briq.) Gugler
Stemmacantha heleniifolia subsp. bicknellii (Briq.) Dittrich