Centaurea eugenii Sosn. in Věstn. Tiflissk. Bot. Sada, ser. 2, 5: 32. 1931
Centaurea eugenii in Věstn. Tiflissk. Bot. Sada, ser. 2, 5: 32. 1931
is basionym for Psephellus eugenii in Willdenowia 30: 39. 2000
Centaurea eugenii in Věstn. Tiflissk. Bot. Sada, ser. 2, 5: 32. 1931