Calflora
Taxon  Report   472    
Arabis oregana  Rollins
Oregon rock cress,   Oregon rockcress
Arabis oregana, a dicot, is a perennial herb that is native to California, and also found in Oregon.
California Rare Plant Rank: 4.3 (limited distribution).   CNDDB
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
Observation Search
(82 records)
one or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Family: Brassicaceae  
Genus: Arabis

Ultramafic affinity: 3.8 - broad endemic / strong indicator

Communities: Yellow Pine Forest, Chaparral

Name Status:
Accepted by JEF + CNPS + PLANTS
Alternate Names:
PLANTSArabis purpurascens
More information about  Arabis oregana

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]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/28/2022).