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Taxon  Report  
Caulanthus flavescens  (Hook.) Payson
Yellow california mustard
Caulanthus flavescens is an annual herb that is native to California, and endemic (limited) to California.
also called Guillenia flavescens
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: Caulanthus
Family: Brassicaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Ultramafic affinity: 2.3 - weak indicator

Communities: Valley Grassland

Name Status:
Accepted by JEF
Alternate Names:
JEFGuillenia flavescens
JEFStreptanthus flavescens
JEFThelypodium flavescens
PLANTSGuillenia flavescens
POWOStreptanthus flavescens
Information about  Caulanthus flavescens from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (GUFL3)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[efloras.org] Range: Caulanthus flavescens is distributed primarily from Monterey and San Benito counties north to Napa and San Joaquin counties. (link added by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/21/2025).