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Perideridia oregana  (S. Watson) Mathias
Oregon yampah
© 2021 Cynthia Powell
© 2022 Phil Johnson
© 2022 Phil Johnson
© 2022 Phil Johnson
© 2022 Phil Johnson
© 2021 Cynthia Powell
© 2008 Keir Morse
© 2006 Keir Morse
© 2006 Keir Morse
© 2022 Phil Johnson
© 2008 Keir Morse
Perideridia oregana is a perennial herb that is native to California, and also found elsewhere in western North America.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
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Bloom Period
Genus: Perideridia
Family: Apiaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Ultramafic affinity: 1.7 - weak indicator

Communities: Yellow Pine Forest, Red Fir Forest, Lodgepole Forest

Name Status:
Accepted by JEF + PLANTS + POWO
Information about  Perideridia oregana from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (PEOR6)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 03/28/2025).