Centaurea exsurgens Sosn. in Komarov, Fl. SSSR 28: 435. 1963 Centaurea exsurgens Sosn. in Komarov, Fl. SSSR 28: 435. 1963is new name for Psephellus daghestanicus Sosn. in Grossgejm, Fl. Kavk. 4: 202. 1934Taxon for this nameCentaurea exsurgens Sosn. in Komarov, Fl. SSSR 28: 435. 1963