Potamogeton praelongus Wulfen
Common Name: WHITE-STEMMED PONDWEED
Coefficient of Conservatism: 8
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

Potamogeton praelongus B. S. Walters

Usually in lakes (including the Great Lakes), often in deep water (to 6.7 m), less frequently in rivers.

The leaves of this species are often merely subcordate and sessile in contrast to those of P. richardsonii and P. perfoliatus, which are strongly clasping. See also comments under P. amplifolius.

Locations

Alcona County
Alger County
Allegan County
Baraga County
Barry County
Benzie County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
Clare County
Clinton County
Delta County
Dickinson County
Emmet County
Gogebic County
Grand Traverse County
Gratiot County
Houghton County
Ingham County
Iron County
Jackson County
Kalamazoo County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Leelanau County
    Including Manitou Islands
Lenawee County
Livingston County
Luce County
Mackinac County
Marquette County
Mason County
Mecosta County
Menominee County
Missaukee County
Montcalm County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Ogemaw County
Osceola County
Otsego County
Presque Isle County
Roscommon County
Schoolcraft County
St. Joseph County
Van Buren County
Washtenaw County
Wexford County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 12, 2017. http://michiganflora.net/species.aspx?id=2335.