Veronica peregrina L.
Common Name: PURSLANE SPEEDWELL, NECKWEEK, NECKWEED
Coefficient of Conservatism: 0
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt A-Forb

One of our few native veronicas, but usually ± weedy in habit. The oldest Michigan collections noted are from Oakland Co. (1852) and Washtenaw Co. (1861). It grows in cultivated fields, flower beds, lawns; moist disturbed ground such as logging trails, gravel pits, shores; on limestone pavements, outcrops, and gravels; open moist swales and streamsides; and disturbed ground.

Frequently confused with V. serpyllifolia by those not familiar with both. Besides the characters in the key, V. peregrina usually has nearly linear leaves, somewhat succulent in aspect, in contrast to the broadly rounded, sometimes even orbicular, blades that are usual in V. serpyllifolia. Furthermore, the latter is perennial. Scattered throughout the state are populations with short gland-tipped hairs on the stem (especially above) and in the inflorescence; these are var. xalapensis (Kunth) Pennell.

Locations

Alpena County
Barry County
Bay County
Berrien County
Calhoun County
Cheboygan County
Chippewa County
    Only on Drummond Island
Crawford County
Delta County
Dickinson County
Eaton County
Genesee County
Gratiot County
Hillsdale County
Houghton County
Huron County
Ingham County
Ionia County
Iron County
Isabella County
Jackson County
Kalamazoo County
Kent County
Keweenaw County
    Only on Isle Royale
Lenawee County
Livingston County
Luce County
Mackinac County
Macomb County
Marquette County
Mecosta County
Monroe County
Montcalm County
Montmorency County
Newaygo County
Oakland County
Ontonagon County
Ottawa County
Sanilac County
Shiawassee County
St. Clair County
St. Joseph County
Tuscola County
Van Buren 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 15, 2017. http://www.michiganflora.net/species.aspx?id=1981.