Fig. 2. Literature sources in which Mizuna and/or Mibuna are depicted and their publication years.

a Picture of Mizuna depicted in Koukasyunju, published in 1707. b Syuuimiyako-meisyo-zue, published in 1787. Text at the top of the picture (upper right) and the vegetables drawn in the back (bottom right) are enlarged. The text in red can be translated as “In one theory, it is Mibuna, not Mizuna”. c The picture of Mizuna (left) and description of Mibuna in Soumoku-zusetsu published in 1856–1862. The text in red can be translated as “Mibuna is a product of Mibu region with a few leaf serrations, white petioles, and a strong taste”. d Description of Mizuna in Nihon-Sanbutsushi, published in 1873. The text in red lines can be translated as “The special product made in Mibu region is called Mibuna, and there is no serration on the leaves”. e Pictures of Mizuna (top) and Mibuna (bottom) from Kokusai-binran, published in 1889. The red lines were added by us