Boomstudie by George Andries Roth (1809–1887). Original from the Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Subterranean Clover (ca. 1772 –1793) by Giorgio Bonelli. Original from the The New York Public Library. Digitally… Free Image from public domain license 
Valentia, annua, quadrifolia, verticillata, floribus ex viridi pallescentibus, fructu echinato (ca. 1772 –1793) by… Free Image from public domain license 
Long-billed Cockatoo (Licmetis nasicus) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… Free Image from public domain license 
Leadbeater's Cockatoo (Cacatua Leadbeaterii) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804… Free Image from public domain license 
Crested Cockatoo (Cacatua galerita) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds… Free Image from public domain license 
Alexanders, Black Lovage, Black Potherb Horse Parsley (ca. 1772 –1793) by Giorgio Bonelli. Original from the The New… Free Image from public domain license 
Martime pine (Pinus maritima) illustrated by Charles Dessalines D' Orbigny (1806-1876). Digitally enhanced from our own 1892… Free Image from public domain license 
Blood-stained Cockatoo (Cacatua sanguinca) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804… Free Image from public domain license 
Vinca minor or Periwinkle (ca. 1772 –1793) by Giorgio Bonelli. Original from the The New York Public Library. Digitally… Free Image from public domain license 
English oak, Quercus fastigiata from Traité des Arbres et Arbustes que l'on cultive en France en pleine terre… Free Image from public domain license 
Tree branches. Illustration from Seitei Kacho Gafu (1890–1891) by Wantanabe Seitei, a prominent Kacho-ga artist.… Free Image from public domain license 
Tree branches. Illustration from Seitei Kacho Gafu (1890–1891) by Wantanabe Seitei, a prominent Kacho-ga artist.… Free Image from public domain license 
Basket of grapes from Seitei Kacho Gafu (1890–1891) by Wantanabe Seitei, a prominent Kacho-ga artist. Digitally… Free Image from public domain license 
White blossomed flower. Illustration from Seitei Kacho Gafu (1890–1891) by Wantanabe Seitei, a prominent Kacho-ga… Free Image from public domain license 
Wild dandelions illustration from Seitei Kacho Gafu (1890–1891) by Wantanabe Seitei, a prominent Kacho-ga artist.… Free Image from public domain license 
Moth illustration from Churui Gafu (1910) by Morimoto Toko. Digitally enhanced from our own original edition. Free Image from public domain license 
Caterpillar on a peach tree illustration from Churui Gafu (1910) by Morimoto Toko. Digitally enhanced from our own original… Free Image from public domain license 
Leaf and flower illustration from Churui Gafu (1910) by Morimoto Toko. Digitally enhanced from our own original edition. Free Image from public domain license 
