Streptanthus hispidus
| Streptanthus hispidus | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Brassicales |
| Family: | Brassicaceae |
| Genus: | Streptanthus |
| Species: | S. hispidus |
| Binomial name | |
| Streptanthus hispidus A.Gray | |
Streptanthus hispidus, the Mt. Diablo jewelflower,[1] 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. [2]
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
- ↑ "Streptanthus hispidus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 4 December 2015.
- ↑ The Nature Conservancy
External links
- Streptanthus hispidus, Mount Diablo Jewelflower Jepson Manual treatment
- Streptanthus hispidus, Mt. Diablo jewel-flower CNPS Inventory of Rare and Endangered Plants
- Flora of North America
- Photo gallery