MUSHROOMS on Porcelain (by Iwasaki)

Iwasaki Tsunemasa also Kan-en (岩崎 常正 / 灌園, 1786–1842) was a Japanese botanist and artist (as well as a zoologist, entomologist and samurai of the Tokugawa shogunate). 

Woodblock printing  is a technique used widely throughout East Asia. Each page or image is created by carving a wooden block to leave only some areas and lines at the original level; it is these that are inked and show in the print, in a relief printing process. Carving the blocks is skilled and laborious work, but a large number of impressions can then be printed

This porcelain mushroom series includes a variety of fungi from Iwasaki's  botanical book "Honzō Zufu" is a rare and valuable compendium dating from the late Edo period.  Some of his woodblock art has been reprinted by Kew Gardens and is available here.   I have infused the images into the glaze  through an additional third low temperature low tempearture firing using special images printed with iron oxide