Native Plants
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Zannichellia palustris
Zannichellia palustris L.
Horned Pondweed, Horned Poolmat, Horned-pondweed
Zannichelliaceae (Horned pondweed Family)
Synonym(s): Zannichellia major, Zannichellia palustris var. major, Zannichellia palustris var. stenophylla
USDA Symbol: ZAPA
USDA Native Status: L48 (N), AK (N), CAN (N)
From the Image Gallery
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Plant Characteristics
Duration: PerennialHabit: Herb
Fruit Type: Drupe
Size Notes: Submersed stems up to about 20 inches long.
Bloom Information
Bloom Color: Green , BrownBloom Time: Mar , Apr , May , Jun , Jul , Aug
Bloom Notes: Inconspicuous flowers, lacking sepals and petals, are found at the bases of the leaves.
Distribution
USA: AK , AL , AR , AZ , CA , CO , CT , DC , DE , FL , IA , ID , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , MT , NC , ND , NE , NH , NJ , NM , NV , NY , OH , OK , OR , PA , RI , SD , TN , TX , UT , VA , VT , WA , WI , WV , WYCanada: AB , BC , MB , NB , NL , NS , NT , ON , PE , QC , SK
Growing Conditions
Aquatic: yesNational 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 30 - Calflora (2018) CalfloraWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resources
USDA: Find Zannichellia palustris in USDA PlantsFNA: Find Zannichellia palustris in the Flora of North America (if available)
Google: Search Google for Zannichellia palustris
Metadata
Record Modified: 2023-05-25Research By: TWC Staff