Heracleum maximum Bartram
Common Name: COW-PARSNIP
Coefficient of Conservatism: 3
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt P-Forb

Floodplains and river banks, wet meadows and thickets; open hardwoods and clearings (spruce-fir at Isle Royale), borders of forests.

Individuals are often as tall as 2 m, with broad (at most ± 20 cm) flat-topped, white-flowered umbels, and are a striking sight.

Locations

Alcona County
Alger County
Alpena County
Baraga County
Benzie County
Berrien County
Calhoun County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clinton County
Dickinson County
Emmet County
Gratiot County
Hillsdale County
Houghton County
Ingham County
Iron County
Jackson County
Kalamazoo County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Marquette County
Mason County
Mecosta County
Menominee County
Midland County
Monroe County
Muskegon County
Newaygo County
Oakland County
Ontonagon County
Ottawa County
Shiawassee County
St. Clair County
Van Buren County
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. August 20, 2017. http://michiganflora.net/species.aspx?id=125.