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Taxon  Report  
Streptanthus tortuosus  Kellogg
Jewelweed,   Mountain jewelflower,   Shieldplant
Streptanthus tortuosus is an annual or perennial herb that is native to California, and also found elsewhere in western North America.
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

Bloom Period
Subspecies and Varieties:
Genus: Streptanthus
Family: Brassicaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Habitat: slopes

Communities: Yellow Pine Forest, Mixed Evergreen Forest

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
JEFStreptanthus lemmonii
Information about  Streptanthus tortuosus from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora


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Streptanthus tortuosus: From the Greek streptas, "twisted," and anthos, "flower." Tortuosus: winding, very twisted.

[Wikipedia] Description, Range, Habitat: Streptanthus tortuosus is a biennial or short lived perennial plant in the mustard family (Brassicaceae) known by the common names shieldplant,[1] shieldleaf, and mountain jewelflower.[2] Range and habitat It is native to the mountains of northern and central California, its distribution extending just into Oregon and Nevada. It grows in rocky and sandy areas in forests and woodland habitat. Growth pattern It is highly variable in appearance and some authors divide it into many subtaxa. In general, it is a biennial or perennial herb growing a few centimeters to over a meter tall. It is hairless and often waxy in texture. Leaves and stems The basal leaves have oval blades borne on winged petioles, and leaves higher on the stem may be longer and narrower, sometimes clasping the stem at the bases. Leaves turn yellow with age.[2] Inflorescence and fruit Flowers occur at intervals along the upper stem, and there is usually a leaflike bract below them. Each flower has an urn-shaped calyx of sepals in shades of purple or greenish yellow with four petals emerging from the tip. The fruit is a long, thin, curving silique up to 12 to 16 centimeters long. (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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 07/12/2024).