Glechoma hederacea L.
Common Name: GROUND-IVY, GILL-OVER-THE-GROUND, CREEPING CHARLIE
Coefficient of Conservatism: *
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Ad P-Forb

A Eurasian species, which can be cultivated as a ground cover but is too aggressive for most uses, escaping to cover more ground than desired. Now a pernicious weed of lawns, roadsides, river and stream banks, shores, borders of forests and thickets, barnyards, and all sorts of disturbed ground. The earliest Michigan collections seem to be from Ann Arbor (Washtenaw Co.) in 1870 and Port Huron (St. Clair Co.) in 1888, where C. K. Dodge noted that the species was “Becoming very common everywhere. A bad lawn weed.”

Variable in flower size (9–20 mm long) and also in stature, with low creeping plants rooting at the nodes and hence almost impossible to exterminate in lawns, or with tall luxuriant stems in dense taller vegetation along ditches.

Sometimes confused with Lamium, but easily distinguished by the distinctly pedicellate flowers (as well as the strongly 15-nerved calyx).

Locations

Alcona County
Alger County
Allegan County
Alpena County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
Cheboygan County
Chippewa County
Crawford County
Delta County
Eaton County
Emmet County
Genesee County
Gogebic County
Gratiot County
Hillsdale County
Houghton 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
Lenawee County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Marquette County
Mason County
Mecosta County
Midland County
Missaukee County
Monroe County
Newaygo County
Oakland County
Oceana County
Oscoda County
Ottawa County
Saginaw County
Sanilac County
Schoolcraft 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 13, 2017. http://www.michiganflora.net/species.aspx?id=1547.