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Distribution by County   450    
Arabis glabra  (L.) Bernh.  var. glabra 

(not an active name)
Smooth rock cress, Tower mustard
Arabis glabra var. glabra is a perennial herb that is native to California.
Record Count by County

Alameda: 5 Lake: 3 Placer: 8 Shasta: 5
Alpine: 1 Lassen: 7 Plumas: 13 Sierra: 1
Amador: 1 Los Angeles: 30 Riverside: 12 Siskiyou: 19
Butte: 5 Madera: 1 San Benito: 23 Solano: 1
Contra Costa: 1 Marin: 18 San Bernardino: 19 Sonoma: 3
Del Norte: 10 Mariposa: 11 San Diego: 9 Tehama: 3
El Dorado: 5 Mendocino: 9 San Francisco: 16 Trinity: 34
Fresno: 10 Modoc: 7 San Luis Obispo: 4 Tulare: 24
Glenn: 1 Monterey: 29 San Mateo: 4 Tuolumne: 4
Humboldt: 52 Napa: 4 Santa Barbara: 6 Ventura: 12
Inyo: 2 Nevada: 5 Santa Clara: 4
Kern: 1 Orange: 1 Santa Cruz: 3

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]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 04/16/2026).