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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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Marsilea oligospora

Marsilea oligospora Goodding

Pacific Water-clover, Pacific Waterclover, Pacific Water Clover

Marsileaceae (Water-clover Family)

Synonym(s): Marsilea vestiva var. oligospora

USDA Symbol: MAOL3

USDA Native Status: L48 (N)


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Plant Characteristics

Duration: Perennial
Habit: Herb , Fern
Size Notes: Up to about 8 inches tall, in dense colonies. When plants are submerged, leaves float on water surface.

Bloom Information

Bloom Color: Not Applicable
Bloom Time: Jun , Jul , Aug , Sep , Oct
Bloom Notes: Non-flowering, sporulating plant. Bloom time refers to spore production.


USA: CA , ID , MT , NV , OR , UT , WA , WY
Native Habitat: Aquatic or amphibious, in and around ponds and marshes, in wet depressions in sagebrush and less commonly on river margins.

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 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 Marsilea oligospora in USDA Plants
FNA: Find Marsilea oligospora in the Flora of North America (if available)
Google: Search Google for Marsilea oligospora


Record Modified: 2020-10-28
Research By: CBR

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