Veronica arvensis L.
Common Name: FIELD SPEEDWELL, CORN SPEEDWELL
Coefficient of Conservatism: *
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Ad A-Forb

A common little Eurasian weed of roadsides and trails, disturbed areas in forests, on shores and rock ledges; in moist fields and gardens; and disturbed ground generally, such as parking lots, vacant lots. Collected by the First Survey in 1837, but without a specific locality (likely either Washtenaw or Wayne Cos.), collected shortly aferwards in Macomb Co. in 1843. and doubtless soon well established. 

The style is ca. 0.5–1 mm long: often intermediate between style lengths of V. dillenii and V. verna, which resemble it. Pedicels are up to 2 mm long.

Locations

Alcona 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
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clinton County
Crawford County
Delta County
Eaton County
Emmet County
Genesee County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Ingham County
Ionia County
Isabella County
Jackson County
Kalamazoo County
Kent County
Keweenaw County
    Including Isle Royale
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Livingston County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Mason County
Mecosta County
Midland County
Missaukee County
Monroe County
Montcalm County
Muskegon County
Newaygo County
Oakland County
Oceana County
Otsego County
Ottawa County
Presque Isle County
Roscommon County
Saginaw County
Schoolcraft County
Shiawassee County
St. Clair County
St. Joseph County
Tuscola County
Van Buren 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 12, 2017. http://www.michiganflora.net/species.aspx?id=1972.