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Taxon  Report  
Streptanthus juneae  N.Jensen
Streptanthus juneae is a perennial herb that is native to California, and endemic (limited) to California.
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
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Bloom Period
Genus: Streptanthus
Family: Brassicaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Name Status:
Accepted by JEF + CNPS

Information about  Streptanthus juneae from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

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Nick Jensen: TWO NEW SPECIES OF STREPTANTHUS: from the San Bernardino Mountains in San Bernardino County

[https://rareplants.cnps.org] Range: Background and Taxonomy Streptanthus juneae N.Jensen is a perennial herb in Brassicaceae known only from the foothills of the San Bernardino Mountains, San Bernardino County. (contributed by Mary Ann Machi)

[https://rareplants.cnps.org] Ecology: Ecology Streptanthus juneae is found between 2,155 to 2,370 meters in elevation (Google LLC 2020 via Jensen 2020 and Jensen, N. pers. comm. 2020), typically on moderate slopes of varying aspects to flat areas, in the understory of open forested areas dominated by Pinus jeffreyi, Abies concolor, and Quercus kelloggii. A single occurrence at Clark?s Grade (record 4) is within openings of montane chaparral dominated by Ceanothus cordulatus resulting from recent logging activity. Plants flower from early June into late August. Fruit set begins in late June and continues into September, with fruits dehiscing in late September (Jensen 2020). Its flowers have been observed to be frequently visited by native bees, particularly Osmia sp. (Megachilidae). Associated species include: Bromus tectorum, Elymus glaucus, E. elymoides, Ericameria nauseosa, Eriogonum spp., Gayophytum diffusum subsp. parviflorum, Penstemon grinnellii, P. rostriflorus, and Poa secunda (Jensen 2020). (contributed 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: 04/12/2024).