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American Water Plantain (Alisma subcordatum Raf.)

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A perennial aquatic plant native to a wide range in North America. Common in its habitat in much of its range.

Range - Expand

Native or Not Present

This tentative map is based on our own research. It may have limited data on Canada and/or Mexico, and there is some subjectivity in our assignment of plants as introduced vs. expanded. Read more in this blog post.


An obligate wetland species. Found in standing to slow-moving water, and soils rich in organic matter and silt, and full sun. Occurs on shores and banks of lakes, ponds, rivers, and streams, margins of marshes and bogs margins, wet fields, and ditches.

Faunal Associations

The seeds are eaten both by waterfowl and upland birds.


Infrequently cultivated as a landscaping plant for ponds.

Alisma subcordatum (American Water Plantain) | USDA PLANTS Database (About This Site)

Alisma subcordatum | Go Botany (About This Site)

Alisma subcordatum | CABI Invasive Species Compendium (About This Site)

Alisma subcordatum | Biota of North America Project (BONAP) (About This Site)

Alisma subcordatum | NatureServe Explorer (About This Site)

Alisma subcordatum | Flora of North America (About This Site)

American Water Plantain | Maryland Biodiversity Project (About This Site)