Yellow 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 license
Iris 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 license