Species Details

Streptanthus howellii

Howell's jewelflower

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Photo by ©Rick York and CNPS  max-height:128px; max-width:145px;
©Rick York and CNPS
Scientific Name:
Streptanthus howellii Wats.
Common Name:
Howell's jewelflower
Family: Brassicaceae
Element Code: PDBRA2G0N0
USDA Plants Symbol: STHO
Synonyms/Other Names:
Lifeform: perennial herb
Blooming Period: Jul-Aug
Elevation:
305 - 1500 meters
1000 - 4920 feet
General Habitat:
  • Lower montane coniferous forest (rocky, serpentinite)
General Micro Habitat:
Micro Habitat:
Notes:
Threatened by mining. Candidate for state listing in OR. See Proceedings of the American Academy of Arts and Sciences 20:353 (1885) for original description.
Threats:
Taxonomy:
Other:
Total Occurrences: 30
Element Occurrence Ranks:
A B C D X U
1 3 2 3 0 21
Occurrence Status:
Historical >20 Years 11
Recent <=20 Years 19
Presence:
Presumed Extant 30
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA), Oregon (OR)
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)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Map

Presumed Extant
Counties   Quads