Crepidiastrum lanceolatum var. platyphyllum (Franch. & Sav.) Tuyama accepted as Crepidiastrum platyphyllum (Franch. & Sav.) Kitam. (original description)
Echinops cathayanus Kitag. accepted as Echinops grijsii Hance (original description)
Hieracium nakaii Kitag. accepted as Hololeion fauriei (H.Lév. & Vaniot) Kitam. (original description)
Taraxacum anadyrense Nakai & Koidz. (original description)
Taraxacum argute-denticulatum Nakai & H.Koidz. ex H.Koidz. accepted as Taraxacum mongolicum Hand.-Mazz. (original description)
Taraxacum dageletense Nakai ex Koidz. (original description)
Taraxacum glabrisquamum Nakai ex Koidz. (original description)
Taraxacum glaucanthum Nakai ex Koidz. (original description)
Taraxacum hangchouense H.Koidz. accepted as Taraxacum mongolicum Hand.-Mazz. (original description)
Taraxacum hondae Nakai & H.Koidz. ex H.Koidz. accepted as Taraxacum mongolicum Hand.-Mazz. (original description)
Taraxacum kansuense Nakai ex H.Koidz. (original description)
Taraxacum mandshuricum Nakai ex Koidz. accepted as Taraxacum ussuriense Kom. (original description)
Taraxacum neglectum Nakai & Koidz. (original description)
Taraxacum paraceratophorum Nakai ex Koidz. (original description)
Taraxacum pseudodissectum Nakai & H.Koidz. ex H.Koidz. (original description)
Taraxacum taqueti H.Koidz. (original description)