Scutellaria lateriflora L.
Common Name: MAD-DOG SKULLCAP
Coefficient of Conservatism: 5
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

Hardwood and conifer swamps, thickets, wet shores, meadows, river banks, ditches and swales, marshes, and bogs. In much the same diversity of wet habitats as the equally common S. galericulata, but the latter seems more often to be in open places and S. lateriflora more often in shaded ones.

Plants with white corollas, f. albiflora (Farw.) Fernald, are rare. Depauperate plants very rarely have the racemes reduced to a single flower, but are identifiable by the very small size of the flowers together with petiolate leaves.

Plants intermediate with S. galericulata, with intermediate-shaped petiolate leaves and larger flowers (ca. 10–12 mm) than in S. lateriflora, borne singly or in few-flowered racemes, are presumably hybrids, S. ×churchilliana Fernald. The only Michigan collections seen are from Gogebic and Marquette Cos.

Locations

Alcona County
Alger County
Allegan County
Alpena County
Antrim County
Arenac County
Baraga County
Barry County
Benzie County
Berrien County
Calhoun County
Cass County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clare County
Clinton County
Crawford County
Delta County
Dickinson County
Eaton County
Emmet County
Genesee County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Ingham County
Ionia County
Iosco County
Iron County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Lapeer County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Livingston County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Marquette County
Mason County
Mecosta County
Menominee County
Midland County
Monroe County
Montcalm County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ogemaw County
Ontonagon County
Osceola County
Oscoda County
Ottawa County
Presque Isle County
Roscommon County
Saginaw 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 18, 2017. http://michiganflora.net/species.aspx?id=1596.