Myriophyllum sibiricum Komarov
Common Name: SPIKED WATER-MILFOIL
Synonym: Myriophyllum exalbescens
Coefficient of Conservatism: 10
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

M. exalbescens of Michigan Flora.

Rivers, ponds, and lakes, in very shallow water or at depths as great as 5.5 m; often in calcareous waters, with marly bottoms. The turions produced by this species are more cylindrical than in M. verticillatum, or even somewhat tapered toward the apex rather than clavate; they have very distinctive short, dark, stiff leaves, some of which often remain above the characteristic U-shaped base of the plant when the turion germinates. Rarely an otherwise normal mature stem will bear only such leaves (distinguished from M. alterniflorum by their very stiff nature and extremely dark green color); plants of this sort have been collected in cold running water.

Locations

Alcona County
Alger County
Allegan County
Antrim County
Arenac County
Baraga County
Barry County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
Clare County
Clinton County
Crawford County
Delta County
Dickinson County
Emmet County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Ingham County
Ionia County
Iosco County
Iron County
Isabella County
Jackson County
Kalamazoo County
Kent County
Keweenaw County
    Including Isle Royale
Lapeer County
Leelanau County
    Including Manitou Islands
Lenawee County
Livingston County
Mackinac County
Marquette County
Mason County
Mecosta County
Menominee County
Missaukee County
Montcalm County
Muskegon County
Oakland County
Oceana County
Ogemaw County
Ontonagon County
Oscoda County
Otsego County
Ottawa County
Presque Isle County
Roscommon County
Schoolcraft 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 13, 2017. http://www.michiganflora.net/species.aspx?id=1427.