Hand drawn botany sweet flag png green plant https://www.rawpixel.com/image/2611533/free-illustration-png-calamus-acorus-acorusView licenseSweet flag (Acorus calamus) illustration. Digitally enhanced from our own book, Medical Botany (1836) by John Stephenson and… https://www.rawpixel.com/image/327214/free-illustration-image-sweet-flag-flowerFree Image from public domain licenseSweet flag (Acorus calamus) illustration from Medical Botany (1836) by John Stephenson and James Morss Churchill. https://www.rawpixel.com/image/327201/premium-illustration-psd-john-stephenson-acorus-calamus-antiqueView license