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Photographer: Robert W. Freckmann
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Family Potamogetonaceae
Potamogeton nodosus Poir.
long-leaf pondweed, long-leaved pondweed
Potamogeton: from Greek potamos, "a river," and geiton, "a neighbor," because of the habitat
nodosus: conspicuous nodes
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| Status: | Native |
| Plant: | perennial, submersed aquatic; stems to 7' long; branched rhizomes |
| Flower: | green-brown, small; inflorescence dense cylindrical spike, above water |
| Fruit: | oval, dry seed with a lumpy dorsal ridge and a short beak |
| Leaf: | alternate, entire, with prominent midvein; submersed and floating narrow, lance-like, on long stem; stipules free of leaf axils, disintegrate |
| Habitat: | usually flowing water >40" deep |
| Notes: | tolerates eutrophic water |
| (Glossary) |
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