.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.)