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Hypericum kalmianum L.
Common Name: KALM'S ST. JOHN'S-WORT
Coefficient of Conservatism: 10
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt Shrub

Moist calcareous interdunal hollows and moist limestone bedrock, sandy, or rocky shores along Lakes Michigan and Huron. Also locally inland, especially northwards, on calcareous (even marly) shores, fens, wet meadows, sunny margins of shrub carrs and swamps, and river banks. Much less common inland in southern Michigan. 

An attractive small native shrub, largely restricted to the Great Lakes region, and most abundant on the shores of the Great Lakes.

Locations

Alcona County
Alger County
Allegan County
Alpena County
Antrim County
Barry County
Bay County
Benzie County
Berrien County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clare County
Crawford County
Delta County
Dickinson County
Emmet County
Grand Traverse County
Huron County
Iosco County
Kent County
Lake County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Manistee County
Mason County
Menominee County
Midland County
Montmorency County
Muskegon County
Newaygo County
Oceana County
Ottawa County
Presque Isle County
Roscommon County
Schoolcraft County
St. Clair County
Tuscola County
Van Buren County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 30, 2023. https://michiganflora.net/species.aspx?id=1462.