Calflora, a 501c3 non-profit
Distribution by County   472    
Arabis oregana  Rollins
Oregon rock cress,   Oregon rockcress
Arabis oregana is a perennial herb that is native to California, and also found in Oregon.
California Rare Plant Rank: 4.3 (limited distribution).
Record Count by County

Lake: 3 Napa: 8 Trinity: 4
Modoc: 1 Siskiyou: 66

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]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 01/27/2023).