> Early modern printed books are a much wider category, encompassing the entire period between ~1450 CE and ~1800 CE (I tend to date the end of the early modern period to the end of the Napoleonic Wars, 1815).

I have one from 1575 about plants and it is indeed beautiful. As I named my daughter after a plant (and she knows that) when she heard about the book and its content she asked me if "her plant" was in it: I had no idea so we looked into that old grimoire and... Turns out it's in there.

Over the centuries people (I have no idea who) did put actual plants in the book, at their corresponding pages, which I really dig.

It's not that rare: it was already "mass printed" and copies regularly show up for sale.

FWIW it's called Histoire des plantes by Fuchs (and it's a copy translated from latin to old french that I've got).