15. Cyanus segetum Hill (1769: 82) .

Centaurea cyanus Linneaus (1753: 911) . Type:—EUROPE. s.d., Anon. s.n. (lectotype LINN-HL1030-16! designated by Wagenitz 1980: 418).

Distribution: — Cyanus segetum is distributed as a weed in most of Europe, Siberia, C Asia, N America and elsewhere, and in natural habitats in Italy, Greece, Turkey and Azerbajian (Wagenitz 2019). In Turkey, it is mainly distributed from southwestern to northwestern parts (Fig. 8).

Selected specimens examined:— TURKEY. Muğla: d. Marmaris, Yarimadasi, 300 m, 17 April 1965, Davis 41279 (E!); Lesvos, Kapi, ca. 400 m, Rechinger 5744 (W!); Kara Dağ, 750 m, 18 May 1988, Ainsworth T20 /88 (E!); Baba Dağ, ca. 1200 m, 15 April 1964, Livermore s.n. (E!) . Tekirdağ: between Çorlu and Symen, 50 m, 5 May 1962, Dudley D34507 (E!); Degirmenköy, 5 May 1967, Baytop & Atilá 10973 (E!); 14 km E of Tekirdag, 13 May 1968, A. Baytop & T. Baytop 12.684 (E!) . Bursa: 2 km from Soğukpinar to Bursa, 950 m, 23 June 1973, Holtz & Hänel 362 (E!) . Izmir: Yamanlar Da., Karagöl, 9 June 1966, Alava & Bocquet 5068 (E!); Kusadasi, Samsundag, near Tasdelen place, 8 May 1968, Kayacik & Yaltirik 3355 (E!) . Balikesir: Kaz Da., 15 km from Beypinar to Zeytinli, 500 m, 20 May 1962, Dudley D34858 (E!); Balikesir-Edremit, 1300 m, 13 May 1964, Kayacik & Elicin 2098 (E!) . Kirklareli: near Derkoy, 24 July 1968, Baytop 14.165 (E!) . Istanbul: near Biukiliç, 11 June 1968, Baytop 13144 (E!) . Isparta: Egridir, Egridir-Kasnak forest, 27 Nolu Bölme, Içersinden, 1510 m, 18 June 1971, Göksin 9476 (E!). Mirkasour: damp ground at roadside near stream overflow, Agnew et al. s.n. (E!). B2 Uşak: Yachamichlar-Keui ( Yaşamişlar Köy) N of Uşak, 1200 m, Blanche 1286 (G-BOIS!) .