[Untitled photo, possibly related to: Artichoke. Monterey County, California]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12244213/photo-image-plant-forest-leafFree Image from public domain licenseKing Protea.Protea cynaroides, the king protea, is a flowering plant. It is a distinctive member of Protea, having the… https://www.rawpixel.com/image/4022336/photo-image-flower-plant-beeFree Image from public domain licenseBlack knapweed plant (Centaurea nigra): flowering stem. Coloured lithograph by F. Waller, c. 1863, after C. Gower. https://www.rawpixel.com/image/14021886/image-flower-plant-grassFree 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 licenseArtichoke drawing, vintage botanical illustration. Free public domain CC0 image. https://www.rawpixel.com/image/6438749/image-flower-vintage-public-domainFree Image from public domain licenseArtichokes growing in Yuma, AZ. USDA Photo by Bobby Baker. Original public domain image from Flickr https://www.rawpixel.com/image/3260971/free-photo-image-artichoke-cabbage-cauliflowerFree Image from public domain licenseTansy Mustard (Descurainia sp)Credit NPS/Hallie Larsen. Original public domain image from Flickr https://www.rawpixel.com/image/4033699/photo-image-flower-plant-leafFree Image from public domain licenseArtisjok (Cynara cardunculus) en prikneus (Silene coronaria) (1640) by anonymous and Crispijn van de Passe I https://www.rawpixel.com/image/13795059/image-paper-rose-flowerFree Image from public domain licenseBotervloot van faience in de vorm van een artisjok (c. 1740 - c. 1775) by anonymous https://www.rawpixel.com/image/13753802/image-plant-art-public-domainFree Image from public domain licenseFifteen examples of different types of flower calyx, including five types of pappus. Chromolithograph, c. 1850. https://www.rawpixel.com/image/13971628/image-flower-plant-leafFree Image from public domain licenseArtichoke. Monterey County, California. Sourced from the Library of Congress. https://www.rawpixel.com/image/12244931/photo-image-background-plant-personFree Image from public domain licenseGiant artichoke, Castroville, California (1991) photography in high resolution by John Margolies. Original from the Library… https://www.rawpixel.com/image/3800313/photo-image-green-vintage-retroFree Image from public domain license