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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).
[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. (link added 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). (link added by Mary Ann Machi)
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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: 12/13/2024).