Taxon  Report   4456 
Juncus dubius  Engelm.
Dubius rush,  Mariposa rush
Juncus dubius
© 2010 Aaron Arthur
More photos from
CalPhotos / Calflora
Juncus dubius
© 2015 Keir Morse
Juncus dubius
© 2015 Keir Morse
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
© 2015 Keir Morse
Genus: Juncus
Yellow Pine Forest, Red Fir Forest, Subalpine Forest, Chaparral, wetland-riparian
Wetlands: Occurs usually in wetlands, occasionally in non wetlands
Name Status:
Accepted by JEF + PLANTS + JM93
More information about  Juncus dubius
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Photos on

Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

website references from Google

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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Jun 18, 2018).

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