Euphorbia officinarum illustration. Digitally enhanced from our own book, Medical Botany (1836) by John Stephenson and James… https://www.rawpixel.com/image/326725/free-illustration-image-cactus-prints-flowerFree Image from public domain licenseWhite turmeric (Curcuma zedoaria) illustration. Digitally enhanced from our own book, Medical Botany (1836) by John… https://www.rawpixel.com/image/327078/free-illustration-image-turmeric-curcuma-whiteFree Image from public domain licenseWhite turmeric (Curcuma zedoaria) illustration from Medical Botany (1836) by John Stephenson and James Morss Churchill. https://www.rawpixel.com/image/327031/premium-illustration-psd-john-stephenson-turmeric-vintage-flowerView licenseEuphorbia officinarum illustration from Medical Botany (1836) by John Stephenson and James Morss Churchill. https://www.rawpixel.com/image/327119/premium-illustration-psd-watercolor-flowers-james-morss-churchill-turmeric-antiqueView license