Robert W. Freckmann Herbarium


  Potamogeton praelongus Wulfen image
Photographer: Paul Skawinski           

Paul Skawinski

Paul Skawinski

Paul Skawinski

Robert W. Freckmann

Robert W. Freckmann

Robert W. Freckmann
Family Potamogetonaceae
Potamogeton praelongus Wulfen
white-stemmed pondweed
Potamogeton: from Greek potamos, "a river," and geiton, "a neighbor," because of the habitat
praelongus: very long
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: perennial, submersed aquatic; stems zigzag white 7'-10' long; stout rhizomes with rust spots
Flower: green-brown, small; inflorescence cylindrical spike
Fruit:oval-to-ovate, plump, dry seed with a short beak and a sharp ridge
Leaf:alternate, entire, with prominent midvein; tip boat-shaped splitting easily; lance to oval clasping from .3-.5 of stem, 3-5 heavy veins; none float
Habitat: clear water 3'-13' deep; in soft sediment soil
Notes: stipules fibrous, white, often shredding late in season, free in leaf axils
(Glossary)

More Information Natural Communities Herbarium Specimens
All Potamogeton list Google- Images or Text

Flora of North America (off site)
Synonyms 
Potamogeton praelongus Wulfen var. angustifolius Graebn.

         
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