Wolffia borealis (Engelm.) Landolt & Wildi ex Gandhi, Wiersema & Brouillet
Synonym: Wolffia punctata
Coefficient of Conservatism: 5
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

Wolffia borealis plants with flattened upper sides & ± pointed ends R. W. Smith plants with flattened upper sides & ± pointed ends

W. punctata of Michigan Flora.

In similar situations as Wolffia columbiana and often growing with it—very rarely growing where W. columbiana is absent.

Though aptly named "borealis," in fact. Wolffia columbiana in Michigan occurs slightly father north and there may occur without W. borealis.


Allegan County
Bay County
Branch County
Clare County
Eaton County
Genesee County
Gratiot County
Hillsdale County
Kalamazoo County
Kent County
Lenawee County
Livingston County
Manistee County
Mason County
Monroe County
Muskegon County
Oakland County
Ottawa County
Shiawassee County
St. Joseph County
Van Buren County
Washtenaw County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 30, 2022. https://michiganflora.net/species.aspx?id=181.