Synonyms
Stemmacantha heleniifolia subsp. bicknellii (Briq.) Dittrich
Rhaponticum heleniifolium subsp. bicknellii (Briq.) Greuter
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