Centaurea pseudoscabiosa Boiss. & Buhse subsp. araratica (Azn.) Wagenitz and C. pseudoscabiosa subsp. glehnii (Trautv.) Wagenitz are reported as new to Iran, and both subspecies are also typified here. In addition, the geographic distribution of discussed subspecies is presented and mapped. Finally, a taxonomic key to all subspecies of C. pseudoscabiosa is provided.