Potamogeton oakesianus J. W. Robbins
Common Name: PONDWEED
Coefficient of Conservatism: 10
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

Potamogeton oakesianus habit G. E. Crow habit

Local in bogs and interdunal boggy pools, lakes, and streams.

A more delicate species in every way than P. natans. The stems of P. oakesianus (at least when dry) are 0.4–0.9 mm thick, while those of P. natans are usually 1 mm or more (0.7–2.5 mm). The submersed leaves and petioles of the floating leaves of P. oakesianus are likewise more delicate on the average than those of P. natans. The petioles in P. oakesianus seem rarely if ever to develop the distinct whitish band at the summit usually characteristic of P. natans.


Alger County
Allegan County
Baraga County
Benzie County
Cass County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
Delta County
Gogebic County
Hillsdale County
Iron County
Kalamazoo County
Kent County
Leelanau County
Luce County
Mackinac County
Marquette County
Newaygo County
Ogemaw County
Osceola County
Presque Isle County
Schoolcraft County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 29, 2022. https://michiganflora.net/species.aspx?id=2332.