Helianthus grosseserratus Martens
Common Name: SAWTOOTH SUNFLOWER
Coefficient of Conservatism: 2
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt P-Forb

Moist places, including swamps and marsh borders; disturbed sites, railroad yards. Near the edge of its range in southern Michigan, and much less common here than its close relative, H. giganteus, with which it hybridizes (see that species).

Locations

Benzie County
Cass County
Ingham County
Kent County
Lenawee County
Livingston County
Monroe County
Oakland County
St. Clair County
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 17, 2017. http://michiganflora.net/species.aspx?id=350.