Achillea rhodoptarmica Nakai (original description)
Cirsium setidens (Dunn) Nakai (original description)
Crepidiastrum Nakai (original description)
Crepidiastrum ameristophyllum (Nakai) Nakai (original description)
Crepidiastrum grandicollum (Koidz.) Nakai (original description)
Crepidiastrum keiskeanum (Maxim.) Nakai (original description)
Crepidiastrum koshunense (Hayata) Nakai accepted as Crepidiastrum lanceolatum (Houtt.) Nakai (original description)
Crepidiastrum lanceolatum (Houtt.) Nakai (original description)
Crepidiastrum lanceolatum f. subpetiolatum Nakai accepted as Crepidiastrum lanceolatum (Houtt.) Nakai (original description)
Crepidiastrum lanceolatum var. latifolium (Makino) Nakai accepted as Crepidiastrum platyphyllum (Franch. & Sav.) Kitam. (original description)
Crepidiastrum linguifolium (A.Gray) Nakai (original description)
Crepidiastrum quercus (H.Lév. & Vaniot) Nakai accepted as Crepidiastrum lanceolatum (Houtt.) Nakai (original description)
Crepidiastrum sect. Monostemma Nakai (original description)
Crepidiastrum taiwanianum Nakai (original description)
Ixeris longirostra Nakai (original description)
Ixeris matsumurae (Makino) Nakai accepted as Ixeris polycephala Cass. (original description)
Ixeris microcephala Nakai (original description)
Ixeris nipponica Nakai accepted as Ixeridium dentatum subsp. nipponicum (Nakai) Pak & Kawano (original description)
Ixeris sororia (Miq.) Nakai accepted as Paraprenanthes sororia (Miq.) C.Shih (original description)
Lactuca nipponica Nakai (original description)
Paraixeris Nakai accepted as Crepidiastrum Nakai (original description)
Paraixeris chelidoniifolia (Makino) Nakai accepted as Crepidiastrum chelidoniifolium (Makino) Pak & Kawano (original description)
Paraixeris denticulata (Houtt.) Nakai accepted as Crepidiastrum denticulatum (Houtt.) Pak & Kawano (original description)
Paraixeris denticulata f. pinnatipartita (Makino) Nakai accepted as Crepidiastrum denticulatum (Houtt.) Pak & Kawano (original description)
Paraixeris denticulato-platyphylla (Makino) Nakai accepted as Crepidiastrum ×nakaii H.Ohashi & K. Ohashi (original description)
Paraixeris yoshinoi (Makino) Nakai accepted as Crepidiastrum yoshinoi (Makino) Pak & Kawano (original description)