I’m leaning heavily towards hoax on this one. Surely some botanist somewhere would recognize the illustrations? Nowadays it’s a hard sell that there’s some secretly place somewhere that hasn’t been charted botanically.
This assumes that the book is a technical manuscript so the drawings of plants are intended as technical drawings of actual plants. But this might not be the case. For all we know the book might be a work of fiction so the illustrator took creative liberties while drawing the plants.
Fair point.
Hypotheses range from a script for a natural language or constructed language, an unread code, cypher, or other form of cryptography, or perhaps a hoax, reference work (i.e. folkloric index or compendium), glossolalia[19] or work of fiction (e.g. science fantasy or mythopoeia, metafiction, speculative fiction).
You should’ve blurred the pic, since that text definitely is not safe for work!