Lying cow (1821) by Jean Bernard (1775-1883). Original from The Rijksmuseum. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/481289/free-illustration-image-vintage-milk-1800sFree Image from public domain licenseWhite hellebore (Veratrum album) illustration. Digitally enhanced from our own book, Medical Botany (1836) by John… https://www.rawpixel.com/image/327052/free-illustration-image-flower-watercolor-white-hellebore-veratrum-albumFree Image from public domain licenseOdontoglossum blandum from Reichenbachia Orchids (1888-1894) illustrated by Frederick Sander (1847-1920). Original from The… https://www.rawpixel.com/image/327955/free-illustration-image-flower-orchid-antiqueFree Image from public domain licenseLaella harpophylla from Reichenbachia Orchids (1888-1894) illustrated by Frederick Sander (1847-1920). Original from The New… https://www.rawpixel.com/image/328002/free-illustration-image-flower-orchidFree Image from public domain licenseCypripedium niveum from Reichenbachia Orchids (1888-1894) illustrated by Frederick Sander (1847-1920). Original from The New… https://www.rawpixel.com/image/327985/free-illustration-image-flowers-flower-orchidFree Image from public domain licenseUraga in Sagami, Ōmi kosui, from Hokusai Sketchbooks, vol. 7, page 45 by Katsushika Hokusai https://www.rawpixel.com/image/11932670/image-background-paper-frameFree Image from public domain licenseVintage tree clipart, botanical icon illustration in green https://www.rawpixel.com/image/3983169/illustration-image-aesthetic-tree-pinkView licenseGroup of Bathers (Groupe de baigneurs) (ca. 1892–1894) by Paul Cézanne. Original from Barnes Foundation.… https://www.rawpixel.com/image/2036354/group-bathers-paul-cezanneFree Image from public domain licenseVintage European style palm tree engraving by James Dwight Dana (1875). Original from the British Library. Digitally… https://www.rawpixel.com/image/556350/vintage-palm-tree-illustrationFree Image from public domain licenseVintage Victorian style tree engraving. Original from the British Library. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/556604/vintage-tree-illustrationFree Image from public domain licenseIn the Woods at Giverny, Blanche Hoschedé at Her Easel with Suzanne Hoschedé Reading (1887) by Claude Monet.… https://www.rawpixel.com/image/547283/monet-garden-paintingFree Image from public domain license