Empetrum nigrum L.
Coefficient of Conservatism: 10
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt Shrub
Status: T
Empetrum nigrum A. A. Reznicek

Bare rock outcrops, cedar or black spruce swamps, and exposed sandy bluffs and old dune ridges (under pines and with other members of Ericaceae, Linnaea, Maianthemum, Trientalis, Melampyrum, Avenella flexuosa, etc.).

Like a number of subarctic/boreal species that range south to Lake Superior, this interesting and seldom-seen species is found in the Isle Royale archipelago and the tip of the Keweenaw Peninsula. It has also been long known from the Pictured Rocks and from sandy banks in eastern Luce Co. More recently, Crowberry was found south of the Lake Superior basin in an open marly cedar swamp with some spruce and tamarack near Moran, Mackinac Co.


Alger County
Keweenaw County
    Including Isle Royale
Luce County
Mackinac County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. June 25, 2022. https://michiganflora.net/species.aspx?id=1213.