Potamogeton robbinsii Oakes
Common Name: PONDWEED
Coefficient of Conservatism: 10
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

In both shallow and deep water of lakes, ponds, and rivers.

One of our most distinctive species in its many-nerved leaves, stipules adnate to the leaf bases, and usually strongly two-ranked foliage. Occasionally flowers in Michigan; fruit is very rare throughout the range of the species. The form with perfectly entire leaves, f. cultellatus Fassett, occurs rarely.

Locations

Alger County
Allegan County
Barry County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clinton County
Emmet County
Gogebic County
Hillsdale County
Ingham County
Iron County
Kalamazoo County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Lenawee County
Luce County
Mackinac County
Marquette County
Mason County
Missaukee County
Muskegon County
Newaygo County
Oakland County
Osceola County
Roscommon County
Schoolcraft County
St. Clair 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 10, 2017. http://www.michiganflora.net/species.aspx?id=2340.