Checklist » Asteraceae » Petasites frigidus var. ×vitifolius
Last updated 11/26/2008 by David Giblin.
Petasites frigidus (L.) Fr. var. ×vitifolius (Greene) Cherniawsky & R.J. Bayer[FNA20, HC2, KZ99]

Publication: Canad. J. Bot. 76: 2072. 1999.

Origin: Native

selected vouchers: WTU

Notes: FNA20: "Petasites frigidus var. ×vitifolius often grows in association with one or both putative parents (P. frigidus var. palmatus and P. frigidus var. sagittatus)."

Bogle (1961, 1968) produced this hybrid through artificial crosses.

References:

» Bogle, A. L. 1961. A study of the genus Petasites in the Pacific Northwest, with special reference to Petasites warrenii St. John. Unpublished M.S. thesis, University of Washington, Seattle.
» Bogle, A. L. 1968. Evidence for the hybrid origin of Petasites warrenii and P. vitifolius. Rhodora 70: 533-551.
» Cherniawsky, D. M. and R. J. Bayer. 1998a. Systematics of North American Petasites (Asteraceae: Senecioneae). I. Morphometric analysis. Canadian Journal of Botany 76: 23-36.
» Cherniawsky, D. M. and R. J. Bayer. 1998b. Systematics of North American Petasites (Asteraceae: Senecioneae). II. Isozyme analysis and population genetic structure. Canadian Journal of Botany 76: 1476-1487.
» Cherniawsky, D. M. and R. J. Bayer. 1998c. Systematics of North American Petasites (Asteraceae: Senecioneae). III. A taxonomic revision. Canadian Journal of Botany 76: 2061-2075.
» Gleason, H. A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada, 2nd ed. The New York Botanical Garden, Bronx. 910 p.
» Toman, J. 1972. A taxonomic survey of the genera Petasites and Endocellion. Folia Geobot. Phytotaxon. 7: 381-406.
Synonyms & Misapplied Names:
Petasites nivalis Greene ssp. vitifolius (Greene) J. Toman
Petasites trigonophyllus Greene
Petasites ×vitifolius Greene[HC]
Petasites warrenii H. St. John