Water dock (Rumex hydrolapathum) illustration. Digitally enhanced from our own book, Medical Botany (1836) by John… https://www.rawpixel.com/image/327154/free-illustration-image-flower-dock-vintageFree Image from public domain licenseGreen water dock and white flowers png vintage illustration https://www.rawpixel.com/image/2611554/free-illustration-png-small-flowers-water-plant-yellow-dockView licenseWater dock (Rumex hydrolapathum) illustration from Medical Botany (1836) by John Stephenson and James Morss Churchill. https://www.rawpixel.com/image/327112/premium-illustration-psd-vintage-botanicals-antique-botanicalView license