Viola labradorica Schrank
Common Name: DOG VIOLET
Synonym: Viola conspersa
Coefficient of Conservatism: 3
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt P-Forb

V. conspersa of Michigan Flora.

Deciduous, mixed, and coniferous forests and swamps, usually in moist ground and often in slightly disturbed areas such as rocky ridges, trailsides, clearings; sometimes in open ground, especially at borders of forests and shores.

The leaves are quite variable on the same plant, the lower ones often ± reniform. The spurs may be a little longer than 5 mm, if the other petals are also unusually large, so that the spur is still no longer than the petals, unlike V. rostrata. The leaves are rather pale or even yellowish green and thin in texture compared to those of V. adunca. Rarely the flowers are pure white. Hybridizes occasionally with V. rostrata to form V. ×malteana House; intermediate in appearance, most noticeably in spur length, with the lateral petals bearded. They have been collected in Antrim, Clare, Emmet, Isabella, Kalamazoo, Midland, Osceola, Sanilac, Tuscola, and Wayne Cos. Hybrids of V. labradorica × V. striata (V. ×eclipes H. Ballard) have been collected in Berrien, Cass, Ingham, Lenawee, Macomb, Midland, Monroe, Sanilac, Washtenaw, and Wayne Cos. These are rather like V. rostrata, but with clearly shorter spurs.

Locations

Alcona County
Alger County
Allegan County
Alpena County
Antrim County
Arenac County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Calhoun County
Cass County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clinton County
Crawford County
Delta County
Dickinson County
Eaton County
Emmet County
Genesee County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Ingham County
Ionia County
Iosco County
Iron County
Isabella County
Jackson 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
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Manistee County
Marquette County
Mason County
Menominee County
Midland County
Missaukee County
Monroe County
Montcalm County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ogemaw County
Ontonagon County
Osceola County
Oscoda County
Otsego County
Ottawa County
Presque Isle County
Roscommon County
Saginaw County
Sanilac County
Schoolcraft County
St. Clair County
St. Joseph County
Tuscola County
Washtenaw County
Wayne County
Wexford County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 13, 2017. http://www.michiganflora.net/species.aspx?id=2781.