Bachelor's Button (Centaurea Cyanus), from the Flowers series for Old Judge Cigarettes https://www.rawpixel.com/image/9085881/image-flowers-art-vintageFree Image from public domain licenseCornflower or bachelor's-buttons (Centaurea cyanus L.): flowering stem with separate floral segments and a description of… https://www.rawpixel.com/image/13955282/image-paper-flower-plantFree Image from public domain licenseKorenbloem (Centaurea cyanus) (1596 - 1610) by Anselmus Boëtius de Boodt and Elias Verhulst https://www.rawpixel.com/image/13742791/image-paper-flower-plantFree Image from public domain licenseThree plants, including a cornflower (Centaurea cyanus) and an iris: flowering stems with two grasshoppers. Etching by N.… https://www.rawpixel.com/image/13993151/image-paper-flower-plantFree Image from public domain licenseA cornflower (Centaurea cyanus), autumn crocus (Colchicum species) and saffron crocus (Crocus sativus): three flowers with a… https://www.rawpixel.com/image/14011596/image-paper-cartoon-flowerFree Image from public domain license