Pineapple (Ananas comosus): large fruit on the end of a leafy stem. Coloured zincograph after M. A. Burnett, c. 1842. https://www.rawpixel.com/image/13951265/image-plant-art-leafFree Image from public domain licenseFlag iris (Iris x germanica): flower and rhizome with some leaves. Coloured lithograph after M. A. Burnett, c. 1842. https://www.rawpixel.com/image/13951254/image-flower-plant-artFree Image from public domain licenseChinese or Turkish rhubarb (Rheum palmatum): flowering and fruiting stem with leaf. Coloured zincograph after M. A. Burnett… https://www.rawpixel.com/image/13964654/image-flower-plant-medicineFree Image from public domain licenseEgyptian gum arabic (Acacia nilotica): flowering stem with separate seed pod. Coloured lithograph after M. A. Burnett, c.… https://www.rawpixel.com/image/13961110/image-flower-plant-medicineFree Image from public domain licenseClove tree (Syzygium aromaticum): flowering stem and separate fruit. Coloured lithograph after M. A. Burnett, c. 1842. https://www.rawpixel.com/image/13954709/image-flower-plant-treeFree Image from public domain licenseCinchona plant (Cinchona officinalis): flowering stem and floral segments. Coloured lithograph after M. A. Burnett, c. 1842. https://www.rawpixel.com/image/13953469/image-flower-plant-medicineFree Image from public domain license