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Taxon  Report  
Arabis mcdonaldiana  Eastw.
Mcdonald's rock cress
Arabis mcdonaldiana is a perennial herb that is native to California, and also found in Oregon.
also called Arabis macdonaldiana
California Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).   CNDDB
State of California status: Endangered. Federal status: Endangered.
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
(76 records)
one or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Genus: Arabis
Family: Brassicaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Ultramafic affinity: 5.4 - broad endemic

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

Name Status:
Accepted by JEF + CNPS
Alternate Names:
JEFArabis blepharophylla var. macdonaldiana
JEF + CNPSArabis macdonaldiana
JEFArabis serpentinicola
More information about  Arabis mcdonaldiana
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

CNPS Inventory


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: 10/02/2022).