Robert W. Freckmann Herbarium

Attention

Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at http://wisflora.herbarium.wisc.edu/. Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

Please direct any comments to wisconsin.state.herbarium@gmail.com.

Thank you.


  Potamogeton robbinsii Oakes image
Photographer: Robert W. Freckmann           

Matthew L. Wagner

Paul Skawinski

Paul Skawinski

Paul Skawinski

Robert W. Freckmann
Family Potamogetonaceae
Potamogeton robbinsii Oakes
fern pondweed, Robbins' pondweed
Potamogeton: from Greek potamos, "a river," and geiton, "a neighbor," because of the habitat
robbinsii: for James Watson Robbins (1801-1879)
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: perennial, submersed aquatic; stems robust; spreading rhizomes
Flower: green-brown, small, stalk from upper leaf axils; inflorescence spike of whorls
Fruit:dry seed with a sharp dorsal ridge and 2 rounded lateral ridges, fruit rarely develops
Leaf:alternate, entire, with prominent midvein; strongly 2-ranked, feather-like, firm, linear, wrapping stem; closely spaced, finely serrated edges
Habitat: deeper water
Notes: where leaf and fibrous stipules meet and fuse, leaf has ear-like lobes; no floating leaves
(Glossary)

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

Flora of North America (off site)
Synonyms 
Potamogeton robbinsii Oakes f. cultellatus Fassett

         
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