Castor oil plant (Ricinus communs) illustration from Medical Botany (1836) by John Stephenson and James Morss Churchill. https://www.rawpixel.com/image/326968/premium-illustration-psd-john-stephenson-vintage-flower-castor-oilView licenseCastor oil plant (Ricinus communis): flowering and fruiting stem, leaf and fruit sections. Coloured lithograph after M. A.… https://www.rawpixel.com/image/13960530/image-flower-plant-artFree Image from public domain licenseCastor oil plant (Ricinus communs) illustration. Digitally enhanced from our own book, Medical Botany (1836) by John… https://www.rawpixel.com/image/326975/free-illustration-image-castor-vintage-flowerFree Image from public domain licenseBotanical psd castor oil plant vintage sketch https://www.rawpixel.com/image/2687123/premium-illustration-psd-beautiful-beige-blossomView licenseMedical botanical castor oil plant illustration https://www.rawpixel.com/image/2686897/premium-illustration-image-beautiful-beige-blossomView licenseVector botanical castor oil plant illustrations https://www.rawpixel.com/image/2695502/premium-illustration-vector-medical-botanical-beautiful-beigeView licensePurging Croton branch with yellow flowers and pink leaves png https://www.rawpixel.com/image/2611546/free-illustration-png-herbal-flower-flowers-watercolorView licenseA still life of castor bean, Ricinus communis containing the water soluble, highly toxic poison known as ricin. https://www.rawpixel.com/image/2288318/free-photo-image-still-life-castor-poisonFree Image from public domain licenseAn American castor-bean plant (Ricinus americanus). Drawing by Thomas Malie, ca. 1730. https://www.rawpixel.com/image/14014231/image-paper-plant-treeFree Image from public domain licenseA plant (Euphorbia sp.): entire flowering plant with separate fruit and flower. Coloured etching by M. Bouchard, 1772. https://www.rawpixel.com/image/13983398/image-flower-plant-medicineFree Image from public domain licenseThree plants, an anenome, a mercury and a crocus: entire flowering plants. Colour nature print, c. 1860. https://www.rawpixel.com/image/13961583/image-flower-plant-artFree Image from public domain licenseA plant (Euphorbia sp.): flowering plant with separate flower and fruit. Coloured etching by M. Bouchard, 1772. https://www.rawpixel.com/image/13964320/image-flower-plant-medicineFree Image from public domain licenseDog's mercury (Mercurialis perennis): flowering plant with roots. Colour nature print by H. Bradbury. https://www.rawpixel.com/image/13981969/image-dogs-flower-plantFree Image from public domain licenseA plant (Euphorbia sp.): flowering plant with separate flower and fruit. Coloured etching by M. Bouchard, 1772. https://www.rawpixel.com/image/13955731/image-flower-plant-medicineFree Image from public domain licenseFour flowering plants, all types of spurge (Euphorbia species). Chromolithograph by W. Dickes & co., c. 1855. https://www.rawpixel.com/image/13964458/image-flower-plant-medicineFree Image from public domain licenseCassava or tapioca plant (Manihot esculenta): leafy stem and tuberous roots. Coloured etching by J. Pass, c. 1809. https://www.rawpixel.com/image/13958076/image-flower-plant-medicineFree Image from public domain licenseA plant (Euphorbia sp.): flowering and fruiting plant with separate rootstock and flower. Coloured etching by M. Bouchard… https://www.rawpixel.com/image/13999922/image-flower-plant-grassFree Image from public domain licenseMyrtus communis romana transparent png https://www.rawpixel.com/image/567853/common-myrtleView licenseA plant (Euphorbia helioscopia L.): flowering plant with separate flowers and fruit. Coloured etching by M. Bouchard, 1772. https://www.rawpixel.com/image/13960089/image-flower-plant-medicineFree Image from public domain licenseA plant (Euphorbia sp.): flowering and fruiting tree. Coloured etching by M. Bouchard, 1772. https://www.rawpixel.com/image/13979640/image-plant-tree-artFree Image from public domain licenseSix British wild flowers, including water pepper and knotweed (Polygonum species). Coloured lithograph, c. 1846, after H.… https://www.rawpixel.com/image/13961025/image-flower-plant-grassFree Image from public domain licenseA spurge (Euphorbia species): flowering stem, leaves, roots and floral segments. Coloured engraving after J. Sowerby, 1794. https://www.rawpixel.com/image/13982518/image-flower-plant-artFree Image from public domain licenseTwelve British wild flowers with their common names. Coloured engraving, c. 1861, after J. Sowerby. https://www.rawpixel.com/image/13951000/image-flower-plant-medicineFree Image from public domain licenseFour flowering plants, three types of spurge (Euphorbia species) and box (Buxus sempervirens). Chromolithograph by W. Dickes… https://www.rawpixel.com/image/13966913/image-flower-plant-medicineFree Image from public domain licenseFour flowering plants, all types of spurge (Euphorbia species). Chromolithograph by W. Dickes & co., c. 1855. https://www.rawpixel.com/image/13956273/image-flower-plant-grassFree Image from public domain licenseFour flowering plants, including asarabacca (Asarum europaeum) and two mercury plants (Mercurialis species).… https://www.rawpixel.com/image/13961629/image-flower-plant-grassFree Image from public domain licenseA plant (Euphorbia sp.): entire flowering and fruiting plant. Coloured etching by M. Bouchard, 1772. https://www.rawpixel.com/image/13959831/image-cat-flower-plantFree Image from public domain licenseWood spurge (Euphorbia amygdaloides): flowering stem and floral segments. Coloured engraving after J. Sowerby, 1795. https://www.rawpixel.com/image/13956967/image-flower-plant-personFree Image from public domain licenseVintage myrtus communis romana vector https://www.rawpixel.com/image/567852/common-myrtleView licenseA spurge plant (Euphorbia portlandica) with an associated insect and its anatomical segments. Coloured etching, c. 1830. https://www.rawpixel.com/image/13958198/image-flower-plant-personFree Image from public domain licenseCascarilla bark plant (Croton eluteria): flowering stem, bark and floral segments. Colour halftone after J. Lambert, c.… https://www.rawpixel.com/image/13954204/image-palm-tree-flower-plantFree Image from public domain licenseVintage myrtus communis romana illustration https://www.rawpixel.com/image/567821/common-myrtleView licenseFever bark (Croton coccineum Willd.): branch with flowers and fruit and separate sections of flower and fruit with seed.… https://www.rawpixel.com/image/13966739/image-paper-flower-plantFree Image from public domain licenseRicinus flower png sticker, watercolor illustration, digitally enhanced from our own original copy of The Open Door to… https://www.rawpixel.com/image/4547748/png-flower-stickerView licenseKamala (a species of Mallotus): branch with flowers and fruit, separate flower and fruit and cross-section of fruit with… https://www.rawpixel.com/image/13962050/image-flower-plant-grassFree Image from public domain licenseEderberry flowering plant transparent png https://www.rawpixel.com/image/567998/elderflower-treeView licenseA plant (Antidesma sylvestris Lam.): large and small branches with flowers and fruit and separate fruit. Coloured line… https://www.rawpixel.com/image/13969217/image-paper-flowers-plantFree Image from public domain licenseFever bark (a species of Croton): branch with flowers and fruit, separate flower, fruit and seeds and sections of fruit.… https://www.rawpixel.com/image/13975905/image-flower-plant-grassFree Image from public domain licenseCroton (Codiaeum variegatum (L.) Blume): flowering and fruiting branch tip with separate, numbered fruit clusters and single… https://www.rawpixel.com/image/13968749/image-flower-plant-artFree Image from public domain licenseYuquilla (Manihot carthaginensis (Jacq.) Mill.): flowering and fruiting stem with separate fruit and floral segments.… https://www.rawpixel.com/image/13961149/image-flower-plant-medicineFree Image from public domain licenseFour types of spurge (Euphorbia species): two succulent stems and two low-growing plants. Coloured etching by J. Pass, c.… https://www.rawpixel.com/image/13953177/image-plant-leaf-public-domainFree Image from public domain licenseVintage elderberry flowering plant vector https://www.rawpixel.com/image/567996/elderflower-treeView licenseFever bark (Croton balsamifer Jacq.): flowering and fruiting stem. Coloured engraving after F. von Scheidl, 1776. https://www.rawpixel.com/image/13961628/image-plant-grass-medicineFree Image from public domain licenseA plant (Euphorbia paralias) related to spurge: entire flowering plant with separate flower and fruit. Coloured engraving… https://www.rawpixel.com/image/13967943/image-flower-plant-grassFree Image from public domain licenseViscum album plant transparent png https://www.rawpixel.com/image/567709/viscum-album-branchView licenseMyrtus communis romana (Myrte commun romain) from Traité des Arbres et Arbustes que l’on cultive en France en… https://www.rawpixel.com/image/567825/common-myrtleFree Image from public domain licenseVintage ginger flowers png with roots illustration https://www.rawpixel.com/image/2611694/free-illustration-png-ginger-rootsView licensePhellandrium aguaticum plant png vintage https://www.rawpixel.com/image/2611527/free-illustration-png-dandelion-herbal-medicine-herbesView licenseWhite astragalus creticus flowers png vintage illustration https://www.rawpixel.com/image/2611555/free-illustration-png-astragalus-herbal-flowerView licenseYellow artemisia flower plant png vintage botany https://www.rawpixel.com/image/2611526/free-illustration-png-artemisia-wormwood-spicesView licensePink flowers diosma crenata plant png sketch https://www.rawpixel.com/image/2611662/free-illustration-png-flowers-botanical-herb-medical-herbsView licenseVintage elderberry flowering plant illustration https://www.rawpixel.com/image/567945/elderflower-treeView licenseFever bark (Croton variegatum L.): branch with leaves only. 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https://www.rawpixel.com/image/2611569/free-illustration-png-valerian-valeriana-medicinal-herbsplantsView licenseVintage green terebinth tree png illustration https://www.rawpixel.com/image/2611551/free-illustration-png-watercolor-tree-turpentine-botanicalView licenseBotanical brown cloves tree png antique illustration https://www.rawpixel.com/image/2611663/free-illustration-png-herbs-watercolor-herbes-backgroundView licensePink nicotiana tabacum flowers png antique illustration https://www.rawpixel.com/image/2611521/free-illustration-png-tobacco-plant-tabacum-herbalView licenseYellow rue flowers with branch png illustration https://www.rawpixel.com/image/2611579/free-illustration-png-rue-ruta-graveolens-plantView licenseYellow greater celandine flowers png vintage illustration https://www.rawpixel.com/image/2611678/free-illustration-png-herbal-watercolor-flower-tetterwort-vintage-medicalView licenseYellow hemlock flowers png botanical illustration https://www.rawpixel.com/image/2611544/free-illustration-png-poison-hemlock-roots-vintage-medicalView licenseChinese rhubarb white png flowers illustration https://www.rawpixel.com/image/2611578/free-illustration-png-rhubarb-turkish-flower-traditional-chinese-medicineView licenseBlue yellow and white flax flowers png vintage https://www.rawpixel.com/image/2611523/free-illustration-png-linum-linum-usitatissimum-vintage-medicalView licenseYellow european goldenrod flowers png illustration https://www.rawpixel.com/image/2611674/free-illustration-png-goldenrod-herbal-africa-plantView licenseLight yellow cajuputi botanical plant png illustration https://www.rawpixel.com/image/2611673/free-illustration-png-australian-flower-wheat-plantsView licenseBotanical citron flowers png vintage illustration https://www.rawpixel.com/image/2611510/free-illustration-png-citron-watercolor-herbalView licenseVintage lavender flowers png botany illustration 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https://www.rawpixel.com/image/2611542/free-illustration-png-poisonous-herbal-nightshadeView licenseHand drawn white licorice flowers png sketch https://www.rawpixel.com/image/2611539/free-illustration-png-licorice-glycyrrhiza-glabra-liquoriceView licenseWhite water dropwort flowers pnga antique illustration https://www.rawpixel.com/image/2611576/free-illustration-png-poison-hemlock-water-herbal-flowerView licenseVintage green notchweed leaves png plant https://www.rawpixel.com/image/2611567/free-illustration-png-goosefoot-vintage-medical-botanicalView licenseQuinine bark white flowers botanical antique illustration https://www.rawpixel.com/image/2611545/free-illustration-png-bark-quinine-cinchona-officinalisView licenseRed socotrine aloe png vintage plant illustration https://www.rawpixel.com/image/2611516/free-illustration-png-genus-flower-herbal-watercolorView licenseChinese plant amomumpng vintage illustration https://www.rawpixel.com/image/2611696/free-illustration-png-vintage-flowers-chinese-stickers-botanical-transparent-backgroundView licenseCartoon rosemary pink flowers png sketch https://www.rawpixel.com/image/2611494/free-illustration-png-rosemary-rosmarinus-vintageView licenseVintage yellow and white lettuce flowers png illustration https://www.rawpixel.com/image/2611577/free-illustration-png-herbal-lactuca-virosaView licenseGreen Borneo camphor leaves png plant vintage illustration https://www.rawpixel.com/image/2611572/free-illustration-png-herbs-hand-drawn-vintage-medical-botanyView licenseHand drawn botany sweet flag png green plant https://www.rawpixel.com/image/2611533/free-illustration-png-calamus-acorus-acorusView licenseGreen coriander white flowers png illustration https://www.rawpixel.com/image/2611677/free-illustration-png-parsley-coriander-cilantroView licenseWhite gum benjamin flowers with leaves png sketch https://www.rawpixel.com/image/2611679/free-illustration-png-medicinal-plant-plants-botanicalView licenseVintage viscum album plant vector https://www.rawpixel.com/image/567885/viscum-album-branchView licenseWhite bay laurel with branch png vintage plant illustration https://www.rawpixel.com/image/2611508/free-illustration-png-green-white-leaves-laurus-nobilis-laurelView licensePng pink wood sorrel flowers with clovers sketch https://www.rawpixel.com/image/2611511/free-illustration-png-clover-shamrock-sorrelView license