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Taxon  Report  
Streptanthus brachiatus  F. W. Hoffm.  ssp. hoffmanii  R. W. Dolan & LaPré
Freed's jewel flower,   Socrates mine jewelflower
Streptanthus brachiatus ssp. hoffmanii is a perennial herb that is native to California, and endemic (limited) to California.
also called Streptanthus brachiatus
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).
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
~12 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
DJJJASONAFMM

Bloom Period
Parent: Streptanthus brachiatus
Genus: Streptanthus
Family: Brassicaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Ultramafic affinity: 5.9 - strict endemic

Communities: Foothill Woodland, Chaparral

Name Status:
Accepted by CNPS + PLANTS
Information about  Streptanthus brachiatus ssp. hoffmanii from other sources
Nursery availability from CNPLX
Commercial availability unknown.
USDA PLANTS Profile (STBRH2)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[wildflower.org] Characteristics, Bloom Info, Distribution: Plant Characteristics Duration: Annual , Perennial Habit: Herb , Subshrub Fruit Type: Silique Size Notes: Up to about 2 feet tall. Bloom Information Bloom Color: White , Purple Bloom Time: May , Jun , Jul Bloom Notes: Sepals purple. Petals whitish, some with purple spots or veins. Distribution USA: CA Native Habitat: Serpentine barrens in chaparral, pine-oak or cypress woodland openings. (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: 07/13/2025).