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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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Juncus uncialis

Juncus uncialis Greene

Inch High Dwarf Rush, Inch-high Rush, Twelfth Rush

Juncaceae (Rush family)



USDA Native Status: L48 (N)


From the Image Gallery

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Plant Characteristics

Duration: Annual
Habit: Grass/Grass-like
Fruit Type: Capsule
Size Notes: Up to about 1-1/2 inches tall.

Bloom Information

Bloom Color: Red , Green
Bloom Time: Mar , Apr , May , Jun


USA: CA , NV , OR , WA
Native Habitat: Margins of vernal pools and ponds.

National Wetland Indicator Status

Status: OBL FACW
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 Juncus uncialis in USDA Plants
FNA: Find Juncus uncialis in the Flora of North America (if available)
Google: Search Google for Juncus uncialis


Record Modified: 2020-11-04
Research By: CBR

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