Crocanthemum canadense (L.) Britton
Common Name: COMMON FROSTWEED
Synonym: Helianthemum canadense

Coefficient of Conservatism: 8
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Nt P-Forb

Helianthemum canadense of Michigan Flora

Dry sandy plains, hillsides, dunes, usually open or with thin tree cover (pines, oak, and/or aspen) or scattered junipers.

Older plants (collected later in the summer) may not display the scattered long hairs on the upper surface of the leaves, which are quite evident when early petaliferous flowers are present, but such late plants will usually have ample cleistogamous flowers or fruits (with their larger capsules and rudimentary outer sepals) to make identification possible. Furthermore, if they have the large fruits developing from early petaliferous flowers, these will be much overtopped by leafy shoots.

Locations

Alcona County
Allegan County
Alpena 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
Clare County
Clinton County
Crawford County
Delta County
Dickinson County
Eaton County
Emmet County
Gladwin County
Grand Traverse County
Hillsdale County
Huron County
Ingham County
Ionia County
Iosco County
Iron County
Jackson County
Kalamazoo County
Kent County
Lake County
Leelanau County
Lenawee County
Livingston County
Luce County
Manistee County
Marquette County
Mason County
Mecosta County
Menominee County
Monroe County
Montcalm County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ogemaw County
Oscoda County
Ottawa County
Presque Isle County
Schoolcraft County
St. Clair County
St. Joseph 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 21, 2014. http://michiganflora.net/species.aspx?id=812.