Cardamine pensylvanica Willd.
Common Name: PENNSYLVANIA BITTER CRESS
Coefficient of Conservatism: 1
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt B-Forb

Wet areas: swamps, stream margins, swamps, seepy shores and banks, cedar swamps, rocky to sandy shores, often in somewhat disturbed areas, such as ditches or trails in moist forests, rarely in dry ground.

Although the stems are often described as pubescent, at least on plants not growing in water, the great majority of our specimens have glabrous stems. Small plants in drier places are not always easily distinguished from C. parviflora. A very few specimens of C. pensylvanica have been seen with sparsely ciliate petioles on the cauline leaves, but the plants are so tall and the leaf segments so broad that they can be readily separated from C. flexuosa or C. hirsuta.

Locations

Alger County
Allegan County
Arenac County
Baraga County
Barry County
Bay County
Berrien County
Calhoun County
Cass County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clare County
Crawford County
Delta County
Dickinson County
Eaton County
Emmet County
Genesee County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Ingham County
Ionia County
Isabella County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Lapeer County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Livingston County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Marquette County
Mason County
Mecosta County
Monroe County
Montcalm County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Ogemaw County
Ontonagon County
Osceola County
Ottawa County
Presque Isle County
Roscommon County
Sanilac County
Schoolcraft 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. December 11, 2017. http://www.michiganflora.net/species.aspx?id=632.