Viola nephrophylla Greene
Common Name: NORTHERN BOG VIOLET
Coefficient of Conservatism: 8
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt P-Forb

Moist to wet places, including fens, swamps, streamsides, borders of marshes, meadows, rock crevices, gravelly and rocky shores; a pronounced calciphile, often seen in interdunal hollows with Primula mistassinica, on moist limestone flats, and in similar habitats.

The large deep violet flowers are held well above the leaves. The blades are often only subcordate or nearly truncate at the base. In addition to the blunter, wider leaves and obtuse sepals with small auricles, this may be distinguished from V. cucullata, which may also occur in similar habitats, by the usually bearded spurred petal. Plants with white flowers have been named f. albinea Farw.

Locations

Alcona County
Alger County
Allegan County
Alpena County
Barry County
Bay County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clare County
Crawford County
Delta County
Emmet County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Iosco County
Jackson County
Kalamazoo County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Lapeer County
Leelanau County
Lenawee County
Livingston County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Marquette County
Mecosta County
Menominee County
Monroe County
Newaygo County
Oakland County
Oceana County
Oscoda County
Presque Isle County
Sanilac County
Schoolcraft County
St. Clair County
St. Joseph 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 18, 2017. http://michiganflora.net/species.aspx?id=2786.