A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium, Burke Museum
Hosted by the University of Washington Herbarium, Burke Museum
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Asteraceae » Petasites frigidus var. sagittatus
Last updated 6/9/2020 by David Giblin.
Petasites frigidus (L.) Fr. var. sagittatus (Pursh) Cherniawsky & R.J. Bayer[FNA20, HC2]
arrowhead sweet coltsfoot, arrowleaf coltsfoot
Publication: Canad. J. Bot. 76: 2070.
Origin: Native
selected vouchers: WTU
Notes: The taxonomy of this complex, including Petasites frigidus and P. sagittatus, is disputed. Cherniawsky and Bayer (1998a,b,c) have shown the group has diverged only recently, and proposed a series of varieties with broadly overlapping ranges. We prefer the classification of H&C and JPM, and maintain P. sagittatus as a full species.
References:
» Dempster, L.T., and F. Ehrendorfer. 1965. Evolution of the Galium multiflorum complex in Western North America. II. Critical Taxonomic Revision. Brittonia 17(4): pp. 289-334.
Synonyms & Misapplied Names:
Petasites sagittatus (Pursh) A. Gray[HC]
