Synonyms
Petasites speciosus var. frigidus J.K.Henry
Nardosmia frigidua var. corymbosa (R.Br.) Herder
Petasites frigidus var. sinuolatus Korobkov
Nardosmia nivalis (Greene) Jurtzev
Petasites alaskanus Rydb.
Petasites frigidus subsp. nivalis (Greene) Cody
Petasites frigidus var. hyperboreoides Hultén
Nardosmia corymbosa (R.Br.) Hook.
Petasites palmatus var. frigidus Macoun
Petasites frigidus var. corymbosus (R.Br.) Cronquist
Petasites nivalis subsp. hyperboreus (Rydb.) J.Toman
Petasites corymbosus (R.Br.) Rydb.
Petasites nivalis Greene
Petasites hyperboreus Rydb.
Petasites gracilis Britton
Tussilago corymbosa R.Br.
Petasites frigidus var. nivalis (Greene) Cronquist