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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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Ruppia cirrhosa

Ruppia cirrhosa (Petagna) Grande

Spiral Ditchgrass, Ditch Grass, Spiral Ditch-grass

Ruppiaceae (Ditch-grass Family)

Synonym(s): Ruppia cirrhosa ssp. occidentalis, Ruppia maritima var. occidentalis, Ruppia maritima var. spiralis, Ruppia occidentalis, Ruppia spiralis

USDA Symbol: RUCI2

USDA Native Status: L48 (N), AK (N), PR (N), VI (N), CAN (N)


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Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Stems up to about 2 feet long, including submerged portion. Only a few inches may be visible above the water.

Bloom Information

Bloom Color: Green , Brown
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct


USA: AK , AR , AZ , CA , CO , IA , ID , IL , MI , MN , MO , MT , ND , NE , NM , NV , OH , OK , OR , SD , TX , UT , WA , WI , WY
Canada: AB , BC , MB , NT , SK , YT
Native Habitat: Wetlands, mostly inland fresh water lakes with high concentrations of sulfur or calcium.

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 3 - Flora of North America (2014) 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 Ruppia cirrhosa in USDA Plants
FNA: Find Ruppia cirrhosa in the Flora of North America (if available)
Google: Search Google for Ruppia cirrhosa


Record Modified: 2020-02-12
Research By: CBR

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