Iris Hartwegii from The Genus Iris (1913) by William Rickatson Dykes. Original from The Biodiversity Heritage Library.… https://www.rawpixel.com/image/2098209/vintage-iris-flower-posterFree Image from public domain licenseSand iris illustration from Les liliacées (1805) by Pierre Joseph Redouté (1759-1840). Original from New York… https://www.rawpixel.com/image/502226/free-illustration-image-flower-iris-sand-redouteFree Image from public domain licenseVintage Iris flower root illustration transparent png https://www.rawpixel.com/image/2093468/iris-flower-root-pngView licenseSnake's head illustration from Les liliacées (1805) by Pierre-Joseph Redouté. Original from New York Public… https://www.rawpixel.com/image/501586/free-illustration-image-flower-public-domain-floral-snake-lilyFree Image from public domain licenseStinking iris illustration from Les liliacées (1805) by Pierre Joseph Redouté (1759-1840). Original from New… https://www.rawpixel.com/image/502115/free-illustration-image-redoute-iris-pierre-josephFree Image from public domain licenseYellow banded iris illustration from Les liliacées (1805) by Pierre Joseph Redouté (1759-1840). Original from… https://www.rawpixel.com/image/501989/free-illustration-image-redoute-background-irisFree Image from public domain licenseSiberian iris illustration from Les liliacées (1805) by Pierre Joseph Redouté (1759-1840). Original from New… https://www.rawpixel.com/image/502445/free-illustration-image-redoute-pierre-joseph-iris-sibiricaFree Image from public domain licenseSpider iris illustration from Les liliacées (1805) by Pierre Joseph Redouté (1759-1840). Original from New… https://www.rawpixel.com/image/502461/free-illustration-image-redoute-spider-pierre-josephFree Image from public domain licenseSiberian iris illustration from Les liliacées (1805) by Pierre Joseph Redouté (1759-1840). Original from New… https://www.rawpixel.com/image/502367/free-illustration-image-flower-redoute-pierre-josephFree Image from public domain licenseYellow iris illustration from Les liliacées (1805) by Pierre Joseph Redouté (1759-1840). Original from New… https://www.rawpixel.com/image/502020/free-illustration-image-green-leaves-flower-redouteFree Image from public domain licenseIris florentina illustration. Digitally enhanced from our own book, Medical Botany (1836) by John Stephenson and James Morss… https://www.rawpixel.com/image/326996/free-illustration-image-flower-iris-james-whiteFree Image from public domain licenseAncient Greece illustration https://www.rawpixel.com/image/451967/premium-illustration-vector-empire-angel-ancient-greekView licenseFlower psd vintage botanical illustration set, remixed from artworks by Pierre-Joseph Redouté https://www.rawpixel.com/image/2873336/premium-illustration-psd-red-gentian-hydrangea-redoute-african-corn-lilyView licenseVintage png blue flower botanical art print set, remixed from artworks by Pierre-Joseph Redouté https://www.rawpixel.com/image/2873202/free-illustration-png-redoute-pierre-joseph-irisView licenseVintage Iris flower illustration transparent png https://www.rawpixel.com/image/2098179/purple-iris-flower-pngView licenseFlower vector vintage botanical illustration set, remixed from artworks by Pierre-Joseph Redouté https://www.rawpixel.com/image/2873368/premium-illustration-vector-currant-forget-nots-hydrangeaView licenseVintage illustration of Iris https://www.rawpixel.com/image/420973/premium-illustration-psd-thomas-baxter-greek-god-romanView licenseScarlet Ibis illustration https://www.rawpixel.com/image/457892/free-illustration-vector-audubon-america-antiqueView licenseIris florentina illustration from Medical Botany (1836) by John Stephenson and James Morss Churchill. https://www.rawpixel.com/image/326994/premium-illustration-psd-antique-botanical-botanyView licenseDifferent types of insects illustrated by Charles Dessalines D' Orbigny (1806-1876). 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