Synonyms: Chondrilla fontinalis; Chondrilla longifolia (heterotypic); Chondrilla tenuis; Crepis bonii (heterotypic); Ixeris dissecta (heterotypic); Ixeris fontinalis (heterotypic); Ixeris japonica dissecta; Ixeris matsumurae (heterotypic); Ixeris matsumurae var. dissecta; Ixeris matsumurae var. matsumurae; Ixeris polycephala f. dissecta; Ixeris polycephala f. polycephala; Ixeris polycephala var. dissecta (homotypic); Ixeris polycephala var. polycephala; Lactuca biauriculata (heterotypic); Lactuca matsumura var. dissecta; Lactuca matsumurae (heterotypic); Lactuca matsumurae var. dissecta (homotypic); Lactuca matsumurae var. matsumurae; Lactuca polycephala (heterotypic)
