Young juniper tree (Juniperus nigra) on a ridge top in Nepal. Watercolour by H. Schlagintweit, 1855. https://www.rawpixel.com/image/13966782/image-cloud-plant-treeFree Image from public domain licensePlate 17, Vol. I. Astrapia Nigra. (Gmelin).. Original from the Minneapolis Institute of Art. https://www.rawpixel.com/image/7652506/image-flower-vintage-artFree Image from public domain licenseBlack Moray eel png sticker, vintage illustration transparent background. Remixed by rawpixel. https://www.rawpixel.com/image/9232215/png-art-watercolourView licenseBlack Moray png eel sticker, vintage illustration transparent background. Remixed by rawpixel. https://www.rawpixel.com/image/9232208/png-art-watercolourView licenseEderberry flowering plant transparent png https://www.rawpixel.com/image/567998/elderflower-treeView license Nigra leaf png vintage sticker, transparent background https://www.rawpixel.com/image/9345111/png-white-background-plantView licenseBlack-Umber (Sciaena nigra) png sticker, fish vintage illustration, transparent background https://www.rawpixel.com/image/9338793/png-art-stickerView licenseHydrochelidon nigra print in high resolution by John Gould (1804–1881) and Henry Constantine Richter (1821-1902). https://www.rawpixel.com/image/8231243/image-art-vintage-public-domainFree Image from public domain licenseHydrochelidon nigra (1804–1902) print in high resolution by John Gould and Henry Constantine Richter. Original from… https://www.rawpixel.com/image/3152166/free-illustration-image-animal-antique-artFree Image from public domain licenseVintage elderberry flowering plant illustration https://www.rawpixel.com/image/567945/elderflower-treeView licenseConifer cones plant transparent png https://www.rawpixel.com/image/568976/black-spruce-treeView licenseConifer cones plant transparent png https://www.rawpixel.com/image/569044/black-pine-treeView licenseVintage black mulberry plant illustration https://www.rawpixel.com/image/568595/mulberries-branchView licensePine cones set transparent png https://www.rawpixel.com/image/569075/pine-conesView licensePng sticker black stork bird hand drawn https://www.rawpixel.com/image/2634602/free-illustration-png-stork-birdView licenseVintage black birch branch plant illustration https://www.rawpixel.com/image/568343/black-birch-treeView licenseVintage red elderberry plant illustration https://www.rawpixel.com/image/568042/red-elderberry-flowerView licenseVintage conifer cones branch plant illustration https://www.rawpixel.com/image/568975/black-spruce-treeView licenseVintage illustration of Nigra https://www.rawpixel.com/image/471244/premium-illustration-psd-ivy-vintage-plants-and-leavesView licenseA plant (Metrodorea nigra): flowering stem and leaves. Coloured zincograph by C. Rosenberg, c. 1850, after himself. https://www.rawpixel.com/image/13970388/image-flower-plant-grassFree Image from public domain licenseVintage black walnut branch plant illustration https://www.rawpixel.com/image/568455/black-walnut-tree-branchView licensePng sticker black scoter bird hand drawn https://www.rawpixel.com/image/2633851/free-illustration-png-duck-bird-blueView licenseCommon elder (Sambucus nigra): flowering and fruiting stems. Coloured lithograph by W. G. Smith, c. 1863, after himself. https://www.rawpixel.com/image/13963288/image-paper-flower-plantFree Image from public domain licenseFree Celebes crested macaque monkey sitting on rock photo, public domain animal CC0 photo. https://www.rawpixel.com/image/5901643/photo-image-public-domain-nature-blackFree Image from public domain licenseThe smallest known unit: 1 Pfennig Notgeld banknote of Trier, designed by Fritz Quant, edited by Druckerei Koch, Trier, Feb.… https://www.rawpixel.com/image/7667015/image-paper-art-vintageFree Image from public domain licenseBlack Moray eel illustration collage element psd. Remixed by rawpixel. https://www.rawpixel.com/image/9232210/psd-art-watercolour-vintageView licenseZwarte zee-eend (Melanitta nigra) (1596 - 1610) by Anselmus Boëtius de Boodt and Elias Verhulst https://www.rawpixel.com/image/13743332/image-paper-art-watercolorFree Image from public domain licenseZwarte zee-eend (Melanitta nigra) (1596 - 1610) by Anselmus Boëtius de Boodt and Elias Verhulst https://www.rawpixel.com/image/13741813/image-paper-face-frameFree Image from public domain licenseElder (Sambucus nigra) from Traité des Arbres et Arbustes que l’on cultive en France en pleine terre… https://www.rawpixel.com/image/568054/elderflower-treeFree Image from public domain licenseNigra from The Ivy, a Monograph (1872). Digitally enhanced from our own original edition of by Shirley Hibberd (1825–1890). https://www.rawpixel.com/image/471241/free-illustration-image-ivy-vintageFree Image from public domain licenseBlack Parrot (Coracopsis nigra) from Natural History of Parrots (1801—1805) by Francois Levaillant. Original from the… https://www.rawpixel.com/image/554812/lesser-vasa-parrot-vintage-posterFree Image from public domain licenseBlack Murrey (Muraena Maculata Nigra) from The natural history of Carolina, Florida, and the Bahama Islands (1754) by Mark… https://www.rawpixel.com/image/329976/free-illustration-image-nigra-florida-fishes-vintageFree Image from public domain licensePng green black mulberry tree vintage botanic illustration https://www.rawpixel.com/image/2611520/free-illustration-png-blackberry-mulberry-leaves-morus-nigraView licenseVintage plants and leaves illustration https://www.rawpixel.com/image/502641/free-illustration-vector-ivy-vintage-leaf-drawing-illustratedView licenseVintage elderberry flowering plant vector https://www.rawpixel.com/image/567996/elderflower-treeView licenseVintage black mulberry plant vector https://www.rawpixel.com/image/568655/mulberries-branchView licenseVintage conifer cones branch plant illustration https://www.rawpixel.com/image/568982/black-pine-treeView licenseVarious conifer cones set illustration https://www.rawpixel.com/image/568946/stone-pine-conifer-coneView licenseVarious conifer cones set illustration https://www.rawpixel.com/image/569122/stone-pine-conifer-cone-setView licenseVintage illustration of Nigra https://www.rawpixel.com/image/471215/premium-illustration-image-ivy-vine-vintage-antiqueView licenseVintage illustration of Black Murrey (Muraena Maculata Nigra) https://www.rawpixel.com/image/329975/premium-illustration-psd-american-and-bahama-islands-animalView licenseBlack Mulberry (Morus nigra) from Traité des Arbres et Arbustes que l’on cultive en France en pleine terre… https://www.rawpixel.com/image/568639/mulberries-branchFree Image from public domain licenseBlack spruce, Abies nigra and Silver fir, Abies alba from Traité des Arbres et Arbustes que l’on cultive en… https://www.rawpixel.com/image/568992/black-spruce-treeFree Image from public domain licenseBlack pine, Pinus laricio from Traité des Arbres et Arbustes que l’on cultive en France en pleine terre… https://www.rawpixel.com/image/568988/black-pine-treeFree Image from public domain licenseRed elderberry (Sambucus racemosa) from Traité des Arbres et Arbustes que l’on cultive en France en pleine… https://www.rawpixel.com/image/568019/red-elderberry-flowerFree Image from public domain licenseBlack mulberry plant transparent png https://www.rawpixel.com/image/568623/mulberries-branchView licenseRed elderberry plant transparent png https://www.rawpixel.com/image/568032/red-elderberry-flowerView licenseBlack birch, Betula nigra from Traité des Arbres et Arbustes que l’on cultive en France en pleine terre… https://www.rawpixel.com/image/568337/black-birch-treeFree Image from public domain licenseBlack walnut, Juglans nigra from Traité des Arbres et Arbustes que l’on cultive en France en pleine terre… https://www.rawpixel.com/image/568525/black-walnut-tree-branchFree Image from public domain licenseA lakeside village scene with lombardy poplar trees (Populus nigra cv. Italica) growing by the water's edge. Lithograph… https://www.rawpixel.com/image/13996627/image-horse-plant-personFree Image from public domain licenseBlack knapweed plant (Centaurea nigra): flowering stem. Coloured lithograph by F. Waller, c. 1863, after C. Gower. https://www.rawpixel.com/image/14021886/image-flower-plant-grassFree Image from public domain licenseAbove, a bloodshot eye showing symptoms of haemorrhagic smallpox, below, an eruption of variola nigra on the abdomen of a… https://www.rawpixel.com/image/13971557/image-paper-face-personFree Image from public domain licenseBlack Moray eel illustration isolated design. Remixed by rawpixel. https://www.rawpixel.com/image/9232211/image-art-watercolour-vintageView license1. Red pine (Pinus rubra) 2. Black pine (Pinus Laricio) 3. Jack pine (Pinus Banksiana) 4. Mountain pine (Pinus pungens) from… https://www.rawpixel.com/image/569162/stone-pine-conifer-cone-setFree Image from public domain licenseBlack mulberry (Morus nigra) illustration. Digitally enhanced from our own book, Medical Botany (1836) by John Stephenson… https://www.rawpixel.com/image/327180/free-illustration-image-blackberry-mulberry-morus-nigraFree Image from public domain licenseBlack birch branch plant transparent png https://www.rawpixel.com/image/568311/black-birch-treeView licenseBlack Stork (Ciconia nigra) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325720/free-illustration-image-von-wright-brothers-vintage-ciconia-nigraFree Image from public domain license1. Pond pine (Pinus serotina) 2. Loblolly pine (Pinus taeda) 3. Black pine (Pinus Australis) from Traité des Arbres… https://www.rawpixel.com/image/569012/stone-pine-conifer-coneFree Image from public domain licenseBlack scoter male (Oidemia nigra) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version… https://www.rawpixel.com/image/325638/free-illustration-image-century-von-wright-brothers-birdFree Image from public domain licenseBlack walnut branch plant transparent png https://www.rawpixel.com/image/568497/black-walnut-tree-branchView licenseBlack scoter female (Oidemia nigra) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326110/free-illustration-image-von-wright-brothers-duck-birdFree Image from public domain licensePine cones set transparent png https://www.rawpixel.com/image/569010/pine-conesView licenseHYDROCHELIDON NIGRA illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska… https://www.rawpixel.com/image/326080/free-illustration-image-von-wright-brothers-bird-1900sFree Image from public domain licenseBlack Honey-eater (Myzomela nigra) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds… https://www.rawpixel.com/image/321226/free-illustration-image-gould-bird-vintage-public-domainFree Image from public domain licenseBlack-Umber (Sciaena nigra) from Ichtylogie, ou Histoire naturelle: génerale et particuliére des poissons… https://www.rawpixel.com/image/938724/sciaena-nigraFree Image from public domain license271. Wilson's Petrel (Thalassidroma wilsoni) 272. Black Skimmer (Rhynchops nigra) illustration from Zoology of New York… https://www.rawpixel.com/image/329461/free-illustration-image-zoology-new-york-free-public-domain-new-york-birdsFree Image from public domain license277. Cayenne Tern (Sterna cayana) 278. Black Tern (Sterna nigra) illustration from Zoology of New York (1842–1844) by… https://www.rawpixel.com/image/329429/free-illustration-image-birds-vintage-sterna-new-yorkFree Image from public domain licenseBlack mulberry (Morus nigra) illustration from Medical Botany (1836) by John Stephenson and James Morss Churchill. https://www.rawpixel.com/image/327178/premium-illustration-psd-mulberry-blackberry-antiqueView licenseVintage plants and leaves illustration https://www.rawpixel.com/image/502638/free-illustration-vector-ivy-leaf-drawing-illustrated-backgroundView licenseBlack Stork (Ciconia nigra) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325679/premium-illustration-psd-stork-america-ancientView licenseBlack scoter male (Oidemia nigra) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version… https://www.rawpixel.com/image/326038/premium-illustration-psd-abstract-america-ancientView licenseVintage snake illustration https://www.rawpixel.com/image/451812/premium-illustration-vector-american-and-bahama-islands-animalView licenseVintage illustration of Black-Umber (Sciaena nigra) https://www.rawpixel.com/image/938241/vintage-fish-illustrationView licenseVintage plants and leaves illustration https://www.rawpixel.com/image/502621/free-illustration-vector-ivy-leaf-drawing-backgroundView licenseBlack scoter female (Oidemia nigra)illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326106/premium-illustration-psd-america-ancient-animalView licenseHYDROCHELIDON NIGRA illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska… https://www.rawpixel.com/image/326097/premium-illustration-psd-vintage-animal-america-ancientView license