Taxon  Report   11821    
Marah horrida  (Congdon) Dunn
Sierra man-root
Marah horrida
© 2009 Barry Breckling
Photos from
CalPhotos / Calflora
Marah horrida
© 2005 Brent Miller
Marah horrida
© 2009 Barry Breckling
Marah horrida, a dicot, is a perennial herb or vine that is native to California, is endemic (limited) to California.

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Marah horrida
© 2013 Aaron Schusteff
Genus: Marah
Communities: Foothill Woodland

Habitat: slopes

Name Status:
Accepted by JEF

Alternate Names:
ICPN: Marah horridus
More information about  Marah horrida
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

Search (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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Dec 16, 2018).