Three centuries old rose engravings
The Royal Society of England has made available prints of some of their engravings from centuries ago.
(It's a great website just to wander through.)
But being's how this is the Antique Rose Forum, I thought you'd like to look at Elizabeth Blackwell's art work of Rosa alba, Rosa rubra, and Rosa damascene.
The artist stood out for several reasons: first she was a woman back when women weren't that active in science. Second she not only did the drawings, but she made the engravings as well, which she published in a book.
And, to my envy, she must have seen the blue poppy in person, because she made a lovely plate of it as well.
This link will take you to the page with her three illustrations; on the next page is a really historic drawing of what another scientist saw when he looked at "Blight on a rose leaf"
Here is a link that might be useful: Page 10 of plants and flowers prints