Petasites sagittatus (Pursh) A. Gray
Common Name: SWEET-COLTSFOOT
Coefficient of Conservatism: 10
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb
Status: T

Ranges from Labrador to Alaska, from the tundra south to the northern Great Lakes region. First collected in Michigan by D. Henson in 1981 in Schoolcraft Co. Wet, open ground; ditches, swales between pine ridges, sedge fens.

Apparently hybridizes with P. frigidus, producing intermediate plants that may be called P. ×vitifolius Greene. These are known from Alger, Chippewa, Ontonagon, and Schoolcraft Cos. Because of their rather different distributions, and clear distinctness in Michigan, we keep P. frigidus and P. sagittatus separate. Petasites sagittatus has been placed as a variety of P. frigidus, var. sagittatus (Pursh) Cherniawsky.

Locations

Alger County
Chippewa County
Delta County
Houghton County
Menominee County
Ontonagon County
Schoolcraft County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 14, 2017. http://michiganflora.net/species.aspx?id=422.