KEY TO THE STUDIED TAXA ACCORDING TO CYPSELA CHARACTERISTICS 1. Pappus absent .............................................................................................................................................. 2 — Pappus present ........................................................................................................................................... 3 2. Boundaries wavy, thick ................................................................................. C. calcitrapa subsp. calcitrapa L. — Boundaries straight, thin ................................................ C. calcitrapa subsp. cilicica (Boiss. & Bal.) Wagenitz 3. Pappus whitish, straw .................................................................................................................................. 4 — Pappus brown, purplish, coppery ................................................................................................................ 7 4. Pappus plumose ..................................................................................................................... C. glastifolia L. — Pappus barbellate ........................................................................................................................................ 5 5. Cypsela surface glabrous ............................................................................................ C. regia Boiss. var. regia — Cypsela surface scarcely scarcely-hairy ......................................................................................................... 6 6. Cypsela surface hairs glandular .......................................................................................... C. sclerolepis Boiss. — Cypsela surface hairs not glandular ......................................................................................... C. solstitialis L. 7. Pappus purplish ........................................................................................................ C. goksivriensis M. Bona — Pappus brownish or coppery ....................................................................................................................... 8 8. Cypsela brown with cream stripes ................................................................................................................ 9 — Cypsela straw to whitish with no stripes .................................................................................................... 12 9. Cypsela surface smooth ............................................................................................................................. 10 — Cypsela surface not smooth ....................................................................................................................... 11 10. Cypsela glabrous ............................................................................. C. cataonica Boiss. & Hausskn. in Boiss. — Cypsela scarcely hairy .................................................................................................. C. rigida Banks & Sol. 11. Cypsela shorter than pappus ............................................................................................. C. antitauri Hayek — Cypsela longer than pappus ..................................................................................... C. amanicola Hub. -Mor. 12. Pappus coppery in colour ............................................................................................................. C. behen L. — Pappus colour brownish ............................................................................................................................ 13 13. Cypsela scarcely hairy ................................................................................................ C. haradjianii Wagenitz — Cypsela glabrous ....................................................................................................................................... 14 14. Cypsela surface smooth ............................................................................................... C. haussknechtii Boiss. — Cypsela surface reticulate ....................................................................................................... C. spicata Boiss.

Published as part of Bona, Mehmet, Çiftçi, Almıla & Ekşi, Gülnur, 2023, Cypsela micro-macromorphological characteristics of selected taxa of Centaurea L. from Turkey and their systematic importance, pp. 27-39 in Adansonia (3) (3) 45 (2) on page 36, DOI: 10.5252/adansonia2023v45a2, http://zenodo.org/record/7616670