Stems 10–30 cm. Leaves: stipules persistent; those on proximal portion of stem tightly clasping or slightly enlarged, to 1 mm wide. Inflorescences: peduncles with flower and/or fruits adjacent or separated by less than 2 cm. Fruits common. 2n = 78.

Phenology: Flowering spring–early fall.
Habitat: Calcareous, saline, or brackish shallow to deep waters of ponds, lakes, streams, ditches, and coastal inshore waters
Elevation: 0–3280 m

Distribution

• Generated Map
• Legacy Map

Greenland, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Idaho, Maine, Mich., Minn., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.Dak., Ohio, Oreg., Pa., S.Dak., Utah, Vt., Wash., Wis., Wyo., Asia.

Discussion

No specimens have been seen from Maryland, but the subspecies is to be expected there.

One hybrid, P. filiformis × P. pectinatus (= P. × suecicus K. Richter), with this species as a putative parent has been described under the genus Potamogeton.

Selected References

None.

Lower Taxa

None.