Calflora, a 501c3 non-profit
Distribution by County   11823    
Marah oregana  (Torr. ex S. Watson) Howell
Coast man-root
Marah oregana is a perennial herb or vine that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 20 Marin: 122 San Francisco: 4 Siskiyou: 2
Contra Costa: 19 Mendocino: 85 San Mateo: 125 Solano: 1
Del Norte: 6 Monterey: 1 Santa Clara: 9 Sonoma: 40
Humboldt: 91 Napa: 3 Santa Cruz: 8 Tehama: 1
Lake: 2 San Benito: 2 Shasta: 3 Trinity: 25

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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/21/2024).