Streptanthus hispidus
{{Short description|Species of flowering plant}}
{{Speciesbox
|image =
| status = G2
| status_system = TNC
| status_ref = {{cite web | url=https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.161361 | title=NatureServe Explorer 2.0 }}
|genus = Streptanthus
|species = hispidus
|authority = A.Gray
}}
Streptanthus hispidus, the Mt. Diablo jewelflower,{{PLANTS|id=STHI2|taxon=Streptanthus hispidus|accessdate=4 December 2015}} is a rare species of flowering plant in the mustard family.
Distribution
It is endemic to Contra Costa County, California, where it is known from fewer than 15 occurrences on and around Mount Diablo. It grows in rocky outcrops in grassland and chaparral habitat. It is threatened by habitat degradation, such as trampling by hikers and destruction during maintenance activities.[http://www.natureserve.org/explorer/servlet/NatureServe?searchName=Streptanthus+hispidus The Nature Conservancy]
Description
Streptanthus hispidus is a bristly annual herb growing up to 30 centimeters tall. Flowers occur in a raceme, the uppermost ones often sterile and different in form. The bristly bell-shaped calyx of sepals is greenish brown in the fertile flowers and purple in the sterile. Fertile flowers have four light purple petals up to a centimeter long. The fruit is a bristly silique up to 8 centimeters in length.
References
{{Reflist}}
External links
- [http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Streptanthus+hispidus Calflora Database: Streptanthus hispidus (Mt. Diablo jewelflower)]
- [http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=45741 Jepson Manual eFlora (TJM2) treatment of Streptanthus hispidus]
- [http://www.rareplants.cnps.org/detail/1502.html California Native Plant Society Inventory of Rare and Endangered Plants: Streptanthus hispidus (Mt. Diablo jewel-flower)]
- [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Streptanthus+hispidus U.C. Photos gallery of Streptanthus hispidus images]
{{Taxonbar|from=Q15549884}}
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Category:Endemic flora of California
Category:Natural history of the California chaparral and woodlands
Category:Natural history of the California Coast Ranges
Category:Natural history of Contra Costa County, California
Category:Endemic flora of the San Francisco Bay Area
Category:Critically endangered flora of California
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