Rafinesque, 1828-1830: Medical Flora.

.html version copyright © 2010–2025 Henriette Kress.

You'll find .pdfs here:

an exquisite version from Missouri Botanical Garden (mobot) at the Biodiversity site (two volumes in one .pdf)
a version at archive.org (volume 1 only)
a version at googlebooks (volume 1 only)
a version at googlebooks (both volumes, but missing many images and some text.)

Medical Flora, or Manual of the Medical Botany of the United States of North America, Vol. 1, 1828, Vol. 2, 1830, was written by C. S. Rafinesque.

Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.