In 1786 and 1787, Oxford professor of botany John Sibthorp and outstanding botanical artist Ferdinand Bauer took an ambitious expedition through the Eastern Mediterranean. They collected samples of, and created art depicting, nearly a thousand plant species.
The results of their work include the Flora Graeca, one of the most ambitious (and expensive) botanical books ever, completed by Sibthorp's colleagues decades after his death.
The artworks of the Flora Graeca are now available online. This site gives you various ways to explore them and related works.