Lovers of botanical art will be delighted by the “Illustrated Manual of Medical Plants” from Iwasaki Kan’en (1786−1842), is considered the first full-scale botanical art book in Japan. It was published in the late Edo period and comprises 92 volumes with more than 1,900 varieties of plants.
It is one of the resources available in the link to the World Digital Library.
All the pages from the first 12 volumes can be consulted on line and also it can be downloaded free of charge in pdf format.