Calflora
Taxon  Report   11823    
Marah oregana  (Torr. ex S. Watson) Howell
Coast man-root
Marah oregana
© 2013 Zoya Akulova
Photos from
CalPhotos / Calflora
Marah oregana
© 2017 Asa B Spade
Marah oregana
© 2009 Dr. Mark S. Brunell
Marah oregana, a dicot, is a perennial herb or vine that is native to California, is also found outside of California, but is confined to western North America.

Interactive Distribution Map


Observation Hotline
(observation details)



point, line, or polygon

Plant Characteristics
and Associations



Bloom Period
Marah oregana
© 2017 Asa B Spade
Family: CUCURBITACEAE  
Genus: Marah
Communities: Redwood Forest, Mixed Evergreen Forest, Douglas-Fir Forest, Yellow Pine Forest
Name Status:
Accepted by JEF

Alternate Names:
ICPN: Marah oreganus
More information about  Marah oregana
Nursery / seed vendor availability from CNPLX
This plant is available commercially.
Landscaping information from Calscape
Photos on PlantID.net   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

Search efloras.org (Flora of North America)

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]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Jan 17, 2019).