Indian Pink by Frederick Edward Hulme (1841-1909), a vintage chromolithograph of Indian pink flower. Digitally enhanced from… https://www.rawpixel.com/image/431509/free-illustration-image-red-flower-vintage-flowersFree Image from public domain licenseA plant (Petrophila teretifolia): flowering and fruiting stem with floral segments. Coloured engraving, c. 1804, after H.… https://www.rawpixel.com/image/13953733/image-christmas-tree-plantFree Image from public domain licenseDubbele bokaal waarvan de deksel bekroond wordt door een tempeltje (1516 - 1556) by anonymous, Cornelis Bos and Agostino… https://www.rawpixel.com/image/13737198/image-paper-cartoon-faceFree Image from public domain licenseYellow lady slipper by Pierre-Joseph Redouté (1759–1840). Original from Biodiversity Heritage Library.… https://www.rawpixel.com/image/263656/free-illustration-image-redoute-flower-pierre-josephFree Image from public domain licenseRed loasa from Edwards’s Botanical Register (1829—1847) by Sydenham Edwards, John Lindley, and James Ridgway. https://www.rawpixel.com/image/559403/maple-leaf-loasa-posterFree Image from public domain licenseTobacco plants (Nicotiana rustica and N. paniculata): flowering and fruiting stem of both species with their respective… https://www.rawpixel.com/image/14009870/image-flower-plant-artFree Image from public domain license