No text, but a visual code

[bi3mw]

The most elementary common sense tells us that if half the pages of a book (the VM) are herbs and the other half are cosmological diagramans or stars, the message of the book is that there is a relationship between both worlds.

Not necessarily, it is also possible that the VMS is a collective manuscript. In this case, it would also be conceivable that the herbal book is self-contained and has no connection to other sections/parts in the VMS. Any other subject could also be considered self-contained. Even the ( nude ) nymphs can only be a creative element of the illustrator that should pretend a section-spanning connection.
Collective manuscripts are anything but unusual in the Middle Ages.