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Potamogeton gramineus
Potamogeton gramineus L.
Variableleaf Pondweed
Potamogetonaceae (Pondweed Family)
Synonym(s): Potamogeton gramineus var. graminifolius, Potamogeton gramineus var. maximus, Potamogeton gramineus var. myriophyllus, Potamogeton gramineus var. typicus
USDA Symbol: POGR8
USDA Native Status: L48 (N), AK (N), CAN (N), GL (N), SPM (N)
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Plant Characteristics
Duration: PerennialHabit: Herb
Breeding System: Flowers Bisexual
Fruit Type: Drupe
Size Notes: Submersed stems up to about 5 feet long.
Leaf: Green, submersed and floating, or submersed only.
Fruit: Drupaceous.
Bloom Information
Bloom Color: GreenBloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct , Nov
Distribution
USA: AK , AZ , CA , CO , CT , DE , IA , ID , IL , IN , KS , MA , ME , MI , MN , MT , ND , NE , NH , NJ , NM , NV , NY , OH , OR , PA , RI , SD , UT , VT , WA , WI , WV , WYCanada: AB , BC , MB , NB , NL , NS , NT , NU , ON , PE , QC , SK , YT
Growing Conditions
Water Use: HighLight Requirement: Sun
CaCO3 Tolerance: Low
Aquatic: yes
National Wetland Indicator Status
Region: | AGCP | AK | AW | CB | EMP | GP | HI | MW | NCNE | WMVE |
Status: | OBL | OBL | OBL | OBL | OBL | OBL | OBL | OBL |
Web Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Webref 26 - Minnesota Wildflowers: a field guide to the flora of Minnesota (2009)
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resources
USDA: Find Potamogeton gramineus in USDA PlantsFNA: Find Potamogeton gramineus in the Flora of North America (if available)
Google: Search Google for Potamogeton gramineus
Metadata
Record Modified: 2023-05-02Research By: TWC Staff