Cerastium arvense L.
Common Name: FIELD CHICKWEED
Coefficient of Conservatism: 6
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt P-Forb

Cerastium arvense subsp. strictum A. A. Reznicek subsp. strictum

Rock outcrops in the Upper Peninsula from the limestones of Drummond Island to the granites and conglomerates farther west; also in dry open oak forests and sandy or grassy places (lawns, roadsides, dry prairies).

This perennial species is widespread in temperate regions of the world. Most of our plants are the native subsp. strictum, which is short (not more than ca. 20 cm) and clump-forming. Plants of roadsides, lawns, and other disturbed habitats mostly in southern Michigan may be the introduced Eurasian subsp. arvense, which is strongly rhizomatous, forming mats, and relatively tall (to at least 30 cm). The differences do not seem very clear in herbarium material, and stated differences in anther length and sepal length do not seem completely correlated with habitat and growth form.

Locations

Alcona County
Alger County
Berrien County
Calhoun County
Charlevoix County
    Only on Beaver Island
Chippewa County
    Only on Drummond Island
Emmet County
Gogebic County
Houghton County
Ingham County
Kalamazoo County
Keweenaw County
    Including Isle Royale
Lake County
Lenawee County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Marquette County
Mecosta County
Midland County
Newaygo County
Ontonagon County
Schoolcraft County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 11, 2017. http://michiganflora.net/species.aspx?id=738.