Taxon Report
Streptanthus howellii Wats.Howell's jewelflower |
 ©Rick York and CNPS |
Classification
|
Scientific Name: |
Streptanthus howellii Wats. |
|
Common Name: |
Howell's jewelflower |
| Family: | Brassicaceae |
| Element Code: | PDBRA2G0N0 |
| USDA Plants Symbol: | STHO |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Jul-Aug | Jul-Aug |
| Elevation: | 305-1500 (1000-4920) |
| General Habitats: | Lower montane coniferous forest |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2G3 |
|
State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | USFS_S |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 30 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 3 |
| Fair (C) | 2 |
| Poor (D) | 3 |
| None (X) | 0 |
| Unknown (U) | 21 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Del Norte (DNT) | |
| Quads: Name (Quad Code) | |
| Gasquet (4112378), High Divide (4112481), High Plateau Mtn. (4112388), Shelly Creek Ridge (4112387) | |
Threat List Data from the CNDDB
| Threat List Total: | 5 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 14 | 47 % | |
| Road/trail construction/maint. | 10 | 33% |
| Mining | 9 | 30% |
| Improper burning regime | 4 | 13% |
| Other | 2 | 6% |
| Wood cutting or brush clearing | 1 | 3% |
Selected References
| USFS Potential Species of Conservation Concern Profile |
Citation
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 26 December 2024].