5. Cyanus eflanensis Kaya & Bancheva (2009: 175) .

Centaurea eflanensis (Kaya & Bancheva) Şirin & Ertuğrul (2019: 540) . Type:— TURKEY. Karabük (A4): 10 km W of Eflani town, on dry grassy places in open pine forest, 1020–1031 m, 41° 20′ 25.7″ N, 32° 42′ 1.9″ E, 6 June 2007, Kaya & Bancheva 84027 (holotype ISTE!, isotypes SOM!, W 2007-0026035!).

Distribution: — Cyanus eflanensis is a very rare endemic of Karabük Province, N Turkey (Fig. 4).