Vincent van Gogh's Almond blossom (1890) famous painting. Original from Wikimedia Commons. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/3868942/illustration-image-flower-art-vincent-van-goghFree Image from public domain licenseNature Print of Moonwort and Adder's Tongue Ferns, plate 51 from The Ferns of Great Britain and Ireland by Henry Bradbury https://www.rawpixel.com/image/8974728/image-paper-flower-plantFree Image from public domain licenseThe Superb Lily, from The Temple of Flora by Richard Earlom https://www.rawpixel.com/image/8969964/the-superb-lily-from-the-temple-flora-richard-earlomFree Image from public domain licenseAfrican Aloe, plate 47 from Phtanthoza Iconographia by Johann Wilhelm Weinmann https://www.rawpixel.com/image/8985809/african-aloe-plate-from-phtanthoza-iconographia-johann-wilhelm-weinmannFree Image from public domain license