| Cirsium japonicum (Thunb.) Fisch. ex DC. | 
		Accepted | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum f. albiflorum Akasawa | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. amurense Kitam. | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum f. arakii (Kitam.) Kitam. | 
		Accepted | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. arakii Kitam. | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. diabolicum (Kitam.) Kitam. ex Ohwi | 
		Accepted | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. fukienense Kitam. | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum f. fukienense (Kitam.) Kitam. | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. horridum Nakai | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. ibukiense Nakai ex Kitam. | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. intermedium (Maxim.) Matsum. | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. japonicum  | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum f. japonicum  | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum subsp. japonicum  | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. kiusianum (Nakai) Nemoto | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. maackii Maxim. | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. maackii (Maxim.) Matsum. | 
		Accepted | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum subsp. maackii (Maxim.) Nakai | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum f. nakaianum (H.Lév. & Vaniot) W.Lee | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum subsp. nikkoense (Nakai ex Matsum. & Koidz.) Nakai | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. nipponense Nakai | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. obvallatum Nakai | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. okiense H.Koyama & Murata | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. ussuriense (Regel) Kitam. ex Ohwi | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. vestitum Kitam. | 
		Accepted | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. vulcani (Franch. & Sav.) Nakai | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum subsp. yezoense (Maxim.) Nakai | 
		Synonym | 
		  | 
		TICA | 
		 | 
	
	
		| Cirsium japonicum var. yezoense (Maxim.) Matsum. | 
		Synonym | 
		  | 
		TICA | 
		 |