Aster yamazutae Matsuda accepted as Aster veitchianus Hutch. & J. R. Drumm. ex G. J. Zhang & T. G. Gao (original description)
Cirsium chikushiense Koidz. (original description)
Cirsium heiianum Koidz. (original description)
Cirsium ogatae Koidz. accepted as Cirsium suffultum (Maxim.) Matsum. (original description)
Cirsium toyoshimae Koidz. (original description)
Cirsium yoshizawae Koidz. accepted as Cirsium yezoense (Maxim.) Makino (original description)
Lactuca grandicolla Koidz. accepted as Crepidiastrum grandicollum (Koidz.) Nakai (original description)
Senecio muninensis Koidz. (original description)