Taxon  Report   4456 
Juncus dubius  Engelm.
Dubius rush,  Mariposa rush

Juncus dubius
© 2010 Aaron Arthur
Juncus dubius, a monocot, is a perennial grasslike herb that is native to California and is also found outside of California, but is confined to western North America.

 Interactive Distribution Map 

 Observation Hotline 
 (observation details + photos)

point, line, or polygon

 Plant Characteristics
 and Associations
Juncus dubius
© 2004 Steve Matson
Genus: Juncus
Yellow Pine Forest, Red Fir Forest, Subalpine Forest, Chaparral, wetland-riparian
Wetlands:Usually occurs in wetlands, but occasionally found in non wetlands [U.S. Fish & Wildlife Service.]
Distribution by County 

Add an Observation of  Juncus dubius

Name Status:
Accepted by TJM2 + PLANTS + JM93
 More information about  Juncus dubius
Location Suitability

Nursery / seed vendor availability from CNPLX
Commercial availability unknown.


Photos on CalPhotos / Google Images

website references on Google

Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation. on the
International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2015. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Nov 26, 2015).

The information on this page comes from diverse sources. None of the links are sponsored.

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