Northern Ontario Plant Database

Synonymy

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Synonymy - Petasites frigidus and subspecies

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Asteraceae Daisy Family

Petasites frigidus (L.) Fr.
northern sweet coltsfoot, arctic sweet coltsfoot ; Fr: pétasite palmé

• [=Nardosmia frigida (L.) Hook.]
• [=Tussilago frigida L. - basionym]

Petasites frigidus var. frigidus (L.) Fr.

Petasites frigidus var. palmatus (Aiton) Cronquist
northern sweet coltsfoot, western sweet coltsfoot, arctic butterbur ; Fr: pétasite palmé

• [=Nardosmia arctica (A.E.Porsild) Á.Löve & D.Löve]
• [=Nardosmia frigida (L.) Hook. var. palmata (Aiton) Herder]
• [=Nardosmia hookeriana Nutt., nom. illeg. superfl.]
• [=Nardosmia palmata (Aiton) Hook.]
• [=Nardosmia speciosa Nutt.]
• [=Petasites arcticus A.E.Porsild]
• [=Petasites frigidus (L.) Fr. subsp. arcticus (A.E.Porsild) Cody]
• [=Petasites frigidus (L.) Fr. subsp. palmatus (Aiton) Cody]
• [=Petasites hookerianus (Nutt.) Rydb.]
• [=Petasites palmatus (Aiton) A.Gray]
• [=Petasites palmatus (Aiton) A.Gray subsp. speciosus (Nutt.) J.Toman]
• [=Petasites speciosus (Nutt.) Piper]
• [=Tussilago palmata Aiton - basionym]

Petasites frigidus var. sagittatus (Banks ex Pursh) Chern.
arrowleaf sweet coltsfoot, arrowhead sweet coltsfoot ; Fr: pétasite sagitté

• [=Nardosmia sagittata (Banks ex Pursh) Hook.]
• [=Petasites dentatus Blank.]
• [=Petasites sagittatus (Banks ex Pursh) A.Gray]
• [=Tussilago sagittata Banks ex Pursh - basionym]

Petasites frigidus var.×vitifolius (Greene) Chern., pro sp. (P. frigidus var. palmatus x P. frigidus var. sagittatus)
grapeleaf sweet coltsfoot, vineleaf petasites ; Fr: pétasite à feuilles de vigne

• [=Nardosmia vitifolia (Greene) Á.& D.Löve]
• [=Petasites nivalis Greene subsp. vitifolius (Greene) J.Toman]
• [=Petasites trigonophyllus Greene]
• [=Petasites warrenii H.St.John]
• [=Petasites x vitifolius Greene, pro sp. - basionym]