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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Triglochin palustris (Marsh arrowgrass)
Weyand, Phyllis

Triglochin palustris

Triglochin palustris L.

Marsh Arrowgrass

Juncaginaceae (Arrow-Grass Family)

Synonym(s): Triglochin palustre

USDA Symbol: TRPA28

USDA Native Status: L48 (N), AK (N), CAN (N), GL (N), SPM (N)


From the Image Gallery

2 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Grass/Grass-like
Fruit Type: Schizocarp
Size Notes: Up to about 16 inches tall.

Bloom Information

Bloom Color: White , Yellow , Green
Bloom Time: May , Jun , Jul , Aug , Sep
Bloom Notes: Yellowish green to whitish.


USA: AK , CA , CO , IA , ID , IL , IN , ME , MI , MN , MT , ND , NE , NM , NV , NY , OH , OR , PA , RI , SD , UT , WA , WI , WY
Canada: NB , NS , PE

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 30 - Calflora (2018) Calflora
Webref 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 Triglochin palustris in USDA Plants
FNA: Find Triglochin palustris in the Flora of North America (if available)
Google: Search Google for Triglochin palustris


Record Modified: 2022-12-21
Research By: TWC Staff

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