Calflora Taxon Report
Arabis oregana  Rollins
Oregon rock cress, Oregon rockcress
photo on Calflora
2012 Gerald Carr
photo on Calflora
2012 Gerald Carr
photo on Calflora
2012 Gerald Carr
photo on Calflora
2012 Gerald Carr
photo on Calflora
2023 Paul Aigner
photo on Calflora
2023 Paul Aigner
photo on Calflora
2025 Ryan O'Dell
photo on Calflora
2025 Ryan O'Dell
photo on Calflora
2023 Paul Aigner
photo on Calflora
2021 Amy Rachkowski
photo on Calflora
2021 Amy Rachkowski
photo on Calflora
2012 Gerald Carr
photo on Calflora
2025 Ryan O'Dell
Arabis oregana is a perennial herb that is native to California, and also found in Oregon.
California Rare Plant Rank: 4.3 (limited distribution)
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
DJJJASONAFMM

Bloom Period
Genus: Arabis
Family: Brassicaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot
Ultramafic affinity: 3.8 - broad endemic / strong indicator

Communities: Yellow Pine Forest, Chaparral

Name Status:
Accepted by JEF + CNPS + PLANTS + POWO
Alternate Names:
PLANTSArabis purpurascens
External links:
Suggested Citation
“Calflora - Taxon Report.” The Calflora Database, a non-profit organization. .

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