SafePlants

Marsh Sandwort (Arenaria paludicola)

The marsh sandwort, scientifically known as Arenaria paludicola, is a delicate flowering plant belonging to the pink family (Caryophyllaceae). It is also known by the common name swamp sandwort.

Considerations for Pets and Children

• This plant produces small flowers, which could be a potential choking hazard for small children or pets if ingested.

Taxonomy and Nomenclature

• Scientific Name: Arenaria paludicola B.L. Rob.
• Common Names: Marsh sandwort, swamp sandwort
• Family: Caryophyllaceae (Pink family)
• Full Name: Arenaria paludicola Rob.
• Species Authority: B. L. Robins.

Conservation Status

• The marsh sandwort is currently listed as an endangered species both federally and in the states of California, Oregon, and Washington.

Distribution and Habitat

• Historically, marsh sandwort was found along the Pacific Coast from Washington State to the San Bernardino Valley in California.
• It prefers freshwater marsh habitats and wetlands, particularly those with cool, wet winters and dry, warm summers (Mediterranean climate).
• Specific locations mentioned include Pierce County, Washington, San Francisco Bay, and Sweet Springs Nature Preserve, Los Osos, CA.

Morphological Characteristics

• Arenaria paludicola is described as an herbaceous green perennial plant.

Ecology

• It is classified as a wetland species and occurs almost always under natural conditions.

Conservation Efforts

• Efforts are underway to propagate cuttings of the endangered marsh sandwort in greenhouses.
• There are also grants for Marsh Sandwort Propagation and Outplanting at Golden Gate National Recreation Area.

Resources

• CNPS (California Native Plant Society) Inventory
• Discover Life provides information on the biology, natural history, ecology, identification, and distribution of Arenaria paludicola.
• Draft recovery plans are available from the U.S. Fish and Wildlife Service.