Cirsium amplexifolium (Nakai) Kitam. (original description)
Cirsium autumnale Kitam. accepted as Cirsium oligophyllum (Franch. & Sav.) Matsum. (original description)
Cirsium boreale Kitam. accepted as Cirsium borealinipponense Kitam. & Murata ex Kitam. (original description)
Cirsium chokaiense Kitam. (original description)
Cirsium diabolicum Kitam. accepted as Cirsium japonicum var. diabolicum (Kitam.) Kitam. ex Ohwi (original description)
Cirsium iburiense Kitam. (original description)
Cirsium inflatum Kitam. accepted as Cirsium nipponicum var. yoshinoi (Nakai) Kitam. ex Ohwi (original description)
Cirsium lucens Kitam. (original description)
Cirsium matsushimense Kitam. accepted as Cirsium nipponicum (Maxim.) Makino (original description)
Cirsium pilosum Kitam. (original description)
Cirsium spinosum Kitam. (original description)
Heteropappus koidzumianus Kitam. accepted as Aster hispidus var. koidzumianus (Kitam.) Mot.Ito (original description)